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kirza4 [7]
3 years ago
8

Mario started with the expression 2(x+ y) + 5(x+7y), applied several steps and simplified the

Mathematics
1 answer:
Artemon [7]3 years ago
3 0

Answer:

8x + 32y

Step-by-step explanation:

Given

2(x+ y) + 5(x+7y)

Required

Expand and identify the steps

2(x+ y) + 5(x+7y)

Apply distributive property

3x + 2y+ 5x + 35y

Apply associative property

3x + 5x + 2y+ 35y

8x + 32y

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<u>join the fractions together</u>

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<u>cross multiply</u>

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<u>simplify</u>

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<u>use quadratic formula</u>

\rightarrow \sf x = \dfrac{-\left(-16\right)\pm \sqrt{\left(-16\right)^2-4\cdot \:4\left(-27\right)}}{2\cdot \:4}

<u>simplify the following</u>

\rightarrow \sf x=\dfrac{4\pm\sqrt{43}}{2}

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