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Stels [109]
3 years ago
5

What is the intermediate step in the form (x + a)? = b as a result of completing the

Mathematics
1 answer:
Mrac [35]3 years ago
5 0

Answer:

(x + 9)² = 36

Step-by-step explanation:

Given

x² + 18x + 57 = 12 ( subtract 57 from both sides )

x² + 18x = - 45

To complete the square

add ( half the coefficient of the x- term)² to both sides

x² + 2(9)x + 81 = - 45 + 81

(x + 9)² = 36

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Answer:

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Step-by-step explanation:

Let's solve for a.

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Step 1: Flip the equation.

ax+8=2x+4

Step 2: Add -8 to both sides.

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Step 2: Add -4 to both sides.

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Step 3: Factor out variable x.

x(−a+2)=4

Step 4: Divide both sides by -a+2.

Hope this helps!

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