Question

check whether it's an quadratic equation: X2+7x+8 = x(x+5)​

Answer 1

=> Answer below

Yes it is a quadratic equation.

Step-by-step explanation:

${x}^{2} + 7x + 8 = x(x + 5)$

${x}^{2} + 7x + 8 = {x}^{2} + 5x$

BRINGING RHS TO LHS

COMPARING EQUATION

${x}^{2} - {x}^{2} + 7x - 5x + 8 = 0$

$2x + 8 = 0$

$2x = - 8$

$x = - 8 \div 2$

$x = - 4$

-4 is not square.

Hence this equation is not quadratic.

Hope u understand!!!

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