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3 years ago

Simplify: 5(x-12x^2)+3(4x+7x^2)

Mathematics

2 answers:

VladimirAG [237]3 years ago

7 0

Answer:

-39x^2 + 17x

Step-by-step explanation:

= 5x - 60x^2 + 3 (4x+7x^2)

= 5x - 60x^2 + 12x + 21x^2

= -39x^2 + 17x

photoshop1234 [79]3 years ago

7 0

Answer:

-39x^2 + 17x is correct

Step-by-step explanation:

I checked it

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fgiga [73]

Answer:

The length of side of largest square is 15 inches

Step-by-step explanation:

The given suares are when joined in the way as shown in picture their sides form a right agnled triangle.

Area of square 1 and perimeter of square 2 will be used to calculate the sides of the triangle.

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<u>Area of square 1: 81 square inches</u>

$s^2 = A\\s^2 = 81\\\sqrt{s^2} = \sqrt{81}\\s = 9$

<u>Perimeter of square 2: 48 inches</u>

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3 years ago