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2 years ago

Whats 15-b=4b-5(5-3)

Mathematics

1 answer:

Gala2k [10]2 years ago

5 0

15-b=4b-5(5-3)

Multiply the bracket by -5

(-5)(5)=-25

(-5)(-3)=15

15-b=4b-25+15

15-b=4b-10

Move 15 to the other side

Sign changes from +15 to -15

15-15-b=4b-10-15

-b=4b-25

Move 4b to the other side.

-b-4b=4b-4b-25

-b-4b=-25

-5b=-25

divide both sides by -5

-5b/-5=-25/-5

Answer: b=5

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4x(2x^2-4x+5)-5x(2x+6)

8x^3-16x^2+20x-10x^3-30x

Combine Like Terms

8x^3-16x^2+20x-10x^3-30x

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Combine like terms

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--------------

<h2>Your answer: -2x(5x^2+4x+5)</h2><h2>(Simplified = 10x^3 + 8x^2 + 10x)</h2>

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