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zloy xaker [14]
3 years ago
10

Here are two steps from the derivation of the quadratic formula. What room place between the first step and the second step?

Mathematics
2 answers:
Vaselesa [24]3 years ago
8 0

Answer:

Step-by-step explanation:

The problem solver "completed the square."  He or she took half of the coefficient of x and squared the result, and then added this square and subtracted this square to/from both sides of the equation.

s344n2d4d5 [400]3 years ago
7 0

Answer:

Completing the Square

Step-by-step explanation:

A.p.e.x ;)

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Answer:

28. m<A=20°, m<B=70°

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Step-by-step explanation:

complementary angle=a+b=90°

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28. A+B=90°

      5x+17x+2=90°

      22x+2=90°

      22x=90-2

      22x=88

        22x/22=88/22

      x=88/22=<u>4</u>

m<A=5x=5*4=<u>20°</u>

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A+B=90°

20+70=90°

<u>90°=90°</u>

32. A+B=180°

     x+11+x-15=180°

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     x=184/2

     x=<u>92</u>

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m<B=x-15=92-15=<u>77°</u>

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