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15
Math.TechQA.Club
2026-04-17 12:31:24
164
Views
Solve in real numbers the system of equations $x^2+2xy=5$, $y^2-3xy=-2$
Published on
17 Apr 2026 - 12:31
#algebra-precalculus
#contest-math
#problem-solving
#real-numbers
#intuition
58
Views
2 degree polynomial problem
Published on
14 Apr 2026 - 0:08
#algebra-precalculus
#polynomials
#problem-solving
99
Views
Circles $C_1,C_2$ have radii $3$ and $7$ respectively. Point $Q$ is chosen on $C_2$ such that $PQ$ is tangent at $Q$. Find $PQ$.
Published on
16 Apr 2026 - 19:48
#geometry
#circles
#problem-solving
495
Views
Points $A,B,C$ lie on a circle with center $O$, radius $7$. The perpendicular bisector of $AB$ meets $BC$ at $P$ and $AC$ at $Q$. Find $OP \cdot OQ$
Published on
16 Apr 2026 - 15:48
#geometry
#contest-math
#euclidean-geometry
#circles
#problem-solving
271
Views
Let a circle with diameter $AB$ have points $C$ and $D$ on same side so that $BD$ bisects $\angle CBA$. Chords $AC$ and $BD$ intersect at $E$.
Published on
16 Apr 2026 - 4:55
#geometry
#euclidean-geometry
#triangles
#circles
#problem-solving
364
Views
Two circles $C_1$ and $C_2$ of radii $10$ cm and $8$ cm are respectively are tangent to each other internally at a point $A$.
Published on
15 Apr 2026 - 21:10
#geometry
#circles
#problem-solving
33
Views
Solving a system of three linear equations with three variables in a different manner.
Published on
14 Apr 2026 - 17:17
#linear-algebra
#matrices
#systems-of-equations
#problem-solving
141
Views
Show $ M_1 \# M_2= U_1 \cup U_2 $ for some open subsets $U_i$ of manifolds $M_i$ such that the following properties hold.
Published on
15 Apr 2026 - 13:01
#general-topology
#manifolds
#differential-topology
#problem-solving
174
Views
A circle $\Gamma_2$ centered at $C$ with radius $CN$ intersects $\Gamma_1$ at points $P$ and $Q$, and the segments $PQ$ and $CD$ intersect at $M$
Published on
17 Apr 2026 - 12:58
#geometry
#contest-math
#euclidean-geometry
#circles
#problem-solving
151
Views
Given that $\sin \angle BOC = \frac{4}{5}$, $AC=24$ , find $[\triangle BDE]$ .
Published on
15 Apr 2026 - 19:15
#geometry
#contest-math
#euclidean-geometry
#circles
#problem-solving
228
Views
What would be the answer to this question? We were instructed to use Polya’s Four Steps in Problem Solving
Published on
15 Apr 2026 - 8:06
#problem-solving
35
Views
Proofing an identity for free variable
Published on
14 Apr 2026 - 0:24
#proof-explanation
#solution-verification
#problem-solving
47
Views
Is it possible to find the area of a triangle from the length of one side and the measure of the opposite angle?
Published on
13 Apr 2026 - 23:19
#euclidean-geometry
#problem-solving
192
Views
Find the ratio of area of $K$ to that of $M$.
Published on
14 Apr 2026 - 20:12
#geometry
#contest-math
#euclidean-geometry
#circles
#problem-solving
48
Views
How to find the sum of the areas of all odd-sided squares in a $9*8$ Grid.
Published on
14 Apr 2026 - 18:35
#combinatorics
#permutations
#contest-math
#combinations
#problem-solving
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