Subtract 2x2 - 6x - 4 from 4x2 - 4x + 3.

2x² + 2x + 7

Step-by-step explanation:

It is given that, two expressions

2x² - 6x - 4 and 4x² - 4x + 3

To find the subtraction result

4x² - 4x + 3 - (2x² - 6x - 4 )

 = 4x² - 4x + 3 - 2x² + 6x + 4

 = 4x² - 2x² - 4x + 6x + 3 + 4

 = 2x² + 2x + 7

Therefore the result for subtraction is  2x² + 2x + 7

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

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