Question

If a =2& b=3 find the value of 5a2-2ab

Answer 1

$\underline{\bold{Answer:-}}$


Given a = 2 and b = 3


Find:- 5a^2 - 2ab


$5a {}^{2} - 2ab \\ \\ putting \: \: the \: \: value \: \: of \: \: a \: \: and \: \: b \\ \\ = > 5(2) {}^{2} - 2 \times 2 \times 3 \\ \\ = > 5 \times 4 - 4 \times 3 \\ \\ = > 20 - 12 \\ \\ = > 8$



$\textbf{Hope it helps!}$

Answer 2

5(2×2) -2(2×3)
5×4-2×6
20-12 =8