4 years ago

Complete the square to solve the equation below. x^2+2x-9=15

Mathematics

2 answers:

saveliy_v [14]4 years ago

6 0

Answer:

Step-by-step explanation:

MAXImum [283]4 years ago

3 0

Answer:

Step-by-step explanation:

x^2+2x-9=15

x^2+2x=24

x^2+2x+1=24+1

(because what you do to one side you do to the other) ^

(x+1)^2=25

(x+1)^2 -25=0

(25 is a perfect square)

(x+1-5)(x+1+5)

(x-4)(x+6)

x=4,-6

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