New posts in algebra-precalculus

Which of the following statements are definitely correct?

algebra-precalculus functions

Number of triangles $\Delta ABC$ with $\angle{ACB} = 30^o$ and $AC=9\sqrt{3}$ and $AB=9$?

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Sum of $1-\frac{2^2}{5}+\frac{3^2}{5^2}-\frac{4^2}{5^3}+....$

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British Maths Olympiad (BMO) 2005 Round 1 Question 1 how to make progress?

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How Lagrange Interpolation works by Chinese Remainder Theorem

linear-algebra algebra-precalculus

Polynomial equal to sum of squares of polynomials [duplicate]

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Sum of all real numbers $x$ such that $(\text{A quadratic})^\text{Another quadratic}=1$.

algebra-precalculus

Factoring Quadratics

algebra-precalculus polynomials factoring quadratics

Prove by contradiction (not using a calculator) that $\sqrt6 + \sqrt2 < \sqrt{15}$?

algebra-precalculus inequality radicals number-comparison

Why $|x|$ is not rational expression?

algebra-precalculus polynomials absolute-value

Find the value of $ [1/ 3] + [2/ 3] + [4/3] + [8/3] +\cdots+ [2^{100} / 3]$

algebra-precalculus functions

Intersection of a line and a curve.

linear-algebra algebra-precalculus quadratics

$\log x =Cx^4$ has only one root. Find C

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The value of $\sqrt{1-\sqrt{1+\sqrt{1-\sqrt{1+\cdots\sqrt{1-\sqrt{1+1}}}}}}$?

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MCQ (No Calculators): What is the remainder when dividing $\left \lfloor (6+\sqrt{7})^8 \right \rfloor$ by $9$?

algebra-precalculus modular-arithmetic divisibility approximation ceiling-and-floor-functions

Distance between two stations

algebra-precalculus contest-math

Proving $9$ divides $n^3 + (n+1)^3 + (n+2)^3$ [duplicate]

algebra-precalculus elementary-number-theory induction divisibility

Proof that $ -1 = \infty $ . [duplicate]

sequences-and-series algebra-precalculus infinity fake-proofs paradoxes

How is $Ax + By = C$ the equation of a straight line?

algebra-precalculus

Solve $(x+1)^n=(x-1)^n$, assuming $x$ is a complex number and $n>0$.

algebra-precalculus