Question

x² + 4x – 5 = 0 ,x=1,-1​

Answer 1

Step-by-step explanation:

X^2 + 4x - 5 = 0

If,

x = 1, -1

Put x = 1

1 + 4 -5 = 0

Also,

Put x = -1

1-4-5

= -3 -5

= -8

Therefore

x = 1 is the correct value

Answer 2

HERE IS YOUR ANSWER MATE:-

${x}^{2} + 4x - 5 = 0 \\ \\ = > {x}^{2} + 5x - x - 5 = 0 \\ \\ = > x(x + 5) - 1(x + 5) = 0 \\ \\ = > (x + 5)(x - 1) = 0 \\ \\ = > x + 5 = 0 \: \: \: \: \: \: \: \: \: or \: \: \: \: \: \: \: \: \: x - 1 = 0 \\ \\ = > x = - 5 \: \: \: \: \: \: \: \: \: or \: \: \: \: \: \: \: \: \: x = 1 \\ \\ = > x = 1 \: \: \: or \: \: \: - 5$

The answer suggest by you is wrong it must be -5 instead of -1.

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