Mathematics: Add or subtract show your work for each problem by using boxes circles colored underlined or group in to identify the like terms before you simplify. a.(-2x^2-4x+13)+(12x^2+2x-25) b.(7x^2+4x-26)-(-7x^2-3x+15)

Add or subtract show your work for each problem by

Ответ:

theamandawhite

21.01.2022

Mathematics

Answer :

(a) 10x^2+2x-12

(b) 14x^2+7x-41

Step-by-step explanation :

Part a:

The given expression is:

(-2x^2-4x+13)+(12x^2+2x-25)

First we have to open the brackets.

-2x^2-4x+13+12x^2+2x-25

Now adding or subtracting like terms like (x², x and number)

10x^2+2x-12

Part b:

The given expression is:

(7x^2+4x-26)-(-7x^2-3x+15)

First we have to open the brackets.

7x^2+4x-26-+7x^2+3x-15

Now adding or subtracting like terms like (x², x and number)

14x^2+7x-41

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Ответ:

EthanIsHyper

08.10.2021

Mathematics

The formula for finding the area of a circle is

a = pi × radius^2

Since the diameter is 14 inches, the radius is 7 inches, so to solve...

a = pi × 7^2
a = 3.14 × 49
a = 153.86

Rounded to the nearest tenth...

153.9 inches^2

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Add or subtract show your work for each problem by using boxes circles colored underlined or group in to identify the like terms before you simplify. a.(-2x^2-4x+13)+(12x^2+2x-25)

b.(7x^2+4x-26)-(-7x^2-3x+15)

Ответ:

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