Question

Simplify: $16x^2-4x^{3}y÷2y\times 7x{y}^2+5x^2$

Answer 1

$16x^2-4x^{3}y÷2y\times 7x{y}^2+5x^2$

by using BODMAS principle

$\Rightarrow 16x^2-4x^{3}y÷2y\times 7x{y}^2+5x^2$

$\Rightarrow 16x^2-2x^3\times 7x{y}^2+5x^2$

$\Rightarrow 16x^2-14x^4{y}^2+5x^2$

$\Rightarrow 16x^2-x^2(14y^2-5)$

$\Rightarrow (16-14y^2-5)x^2$

$\Rightarrow 11-14y^2{x}^2$

$\Rightarrow 11x^2-14y^2{x}^2$.