Complete the square to solve the equation below check all that apply x^2+8x-5=15

Mathematics

1 answer:

Feliz [49]3 years ago

5 0

Answer: $x=-10\\x=2$

Step-by-step explanation:

$x^2+8x-5=15$

Subtract 15 on both sides.

$x^2+8x-5-15=15-15$

$x^2+8x-20=0$

Solve ;

$(x+10)(x-2)=0$

$x+10=0\\x=-10$

$x-2=0\\x=2$

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