3 years ago

Multiply 2x(x^2 + 5)

Mathematics

1 answer:

Helen [10]3 years ago

6 0

2x^3 + 10x (you distribute 2x to x^2 and 5)

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Step-by-step explanation:

Given:

An isosceles triangle ABC with AB = AC.

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∠C = $(3x)\°$

We know that, for an isosceles triangle, the angles opposite equal sides are also equal to each other.

Therefore, ∠B = ∠C

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∴ ∠C = $3\times 25=75$ °

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$\angle A + \angle B + \angle C=180\\(4y+10)+75+75=180\\4y+10+150=180\\4y+160=180\\4y=180-160\\4y=20\\y=\frac{20}{4}=5$

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