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3 years ago

Simplify the expression. −3x + 8x + 2 - 3x + 8x + 2

Mathematics

1 answer:

beks73 [17]3 years ago

6 0

Answer:

10x + 4

Step-by-step explanation:

Combine like terms.

First combine the numbers that have the letter x:

-3x + 8x + 2 - 3x + 8x + 2
-3x + 8x -3x +8x + 2 + 2
10x + 2 + 2

Then combine the ones that don't have the letter x

10x + 2 + 2

10x + 4

Answer is 10x+4

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sp2606 [1]

Answer:

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Let the height of the rectangle is h.

Base = 8+h

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We need to find the base and height of the rectangle. The area of a rectangle is given by :

A = bh

So,

$65=(8+h)\times h\\\\65=8h+h^2\\\\h^2+8h-65=0\\\\(h-5)(h+13)=0\\\\h=5\ m\ \text{and}\ x=-13\ m$

Neglecting negative value, h = 15 m

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