Question

x² + 2x – 3 = x² + 7 x .-23​

Answer 1

Answer:

x = 4

Step-by-step explanation:

x²+2x-3 = x²+7x-23

x²-x²+2x-7x = -23+3

-5x = -20

x = -20/-5

x = 4

Answer 2

$\bf \cancel{{x}^{2}} + 2x - 3 = \cancel{{x}^{2}} + 7x - 23 \\ \small\boxed{ \text{transposing \: RHS \: to \: LHS }} \\ \to \sf2x - 7x - 3 + 23 = 0 \\ \small\boxed{ \text{performing \: calculations}}\\ \to \sf \: \: - 5x + 20 = 0 \\ \small\boxed{ \text{transposing \: 20 \: to \:RHS}} \\ \to \sf \: \: \cancel - 5x = \cancel- 20 \\\small\boxed{ \text{dividing \: both \: sides \: by \: 5}} \\ \to \sf \: \: \frac{ \cancel5x}{ \cancel5} = \frac{20}{5} \\ \huge \to \sf \: \: \:x = \red4$