Question 3 3.1 Given is the quadratic equation: \( m x^{2}-13 x-10=0 \) if one of the roots is 5 , 3.1.1 Use the steps of Polya to solve the equation. You must explain in detail what you are doing in each step. 3.1.2 What challenges may learners experience when solving this problem? (5)

\( \frac{2}{9} \) is ? \( \frac{1}{2} \)

Write sentences with there is / are, affirmative \( \left(n_{\text {and }}\right. \) negative \( (x) \). 1 a cupboard \( \checkmark \) any shelves \( x \) 2 a gym \( X \) a playing field \( \checkmark \) 3 a computer room \( \checkmark \) a library \( x \) 4 any DVDs \( X \) some videos \( \checkmark \) 5 a cinema a museum \( X \) 6 a café any restaurants \( x \)

ados los polinomios \( P(x)=3 x^{3}-6+2 x^{2}+4 x \quad ; Q(x)=7 x-5 x^{2}-2 \quad \) y \( \quad R(x)=-8+6 x \) Calcular: 1) \( P(x)+Q(x)=3 x^{3}-3 x^{2}+11 x-8 \) 2) \( P(x) \cdot R(x)-2 \cdot Q(x)=+18 x^{4}+12 x^{3}-26 \)

\( \lim _ { x \rightarrow - \infty } 7 \sqrt { x ^ { 2 } - 2 x - 3 } - \sqrt[ 3 ] { x ^ { 2 } + 1 } \)

We found in tutorial 7 (using differentiation) that \( \frac{1}{(1-x)^{3}}=\sum_{k=2}^{\infty} \frac{k(k-1)}{2} x^{k-2} \) fo Verify this by finding the binomial series for \( \frac{1}{(1-x)^{3}} \)