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2 years ago

When solving the equation x2 – 8x - 7 = ( by completing

2 answers:

8 0

X^2-8x-7=0
Add 7 to both sides
X^2-8x=7
Now use formula
(B/2a)^2
(-8/2)^2= 16
Add 16 to left subtract from right to get
X^2-8x+16=-9
Now factor into
(X-4)^2=-9
For your final answer

Ivenika [448]2 years ago

5 0

Step-by-step explanation:

x²– 8x - 7 = 0

(x²-8x+16) -7 = 16

(x²-8x+16) = 16+7

(x-4)² = 23

x-4 = √23

so x= 4+√23 or x= -4√23

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3 years ago

Read 2 more answers

A runner runs around a circular track. He completes one lap at a time of t = 269 s at a constant speed of v = 4.6 m/s. What is t

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Answer:

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Step-by-step explanation:

The formula relating distance (d), speed (s), and time (t) is

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3 years ago

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