Rewrite $x(x+3)=10$ in standard form and identify $a$, $b$ and $c$. Factorise and solve the

Question

Rewrite $x(x+3)=10$ in standard form and identify $a$, $b$ and $c$. Factorise and solve the equation. Check both roots by substitution.

Accepted Answer

(a) $x^2+3x-10=0;\ (a,b,c)=(1,3,-10); (b) \ x=-5$ or $2$.

Quadratic Functions, Equations and Inequalities