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Help me out not all just what you can

Help me out not all just what you can-example-1
User Re Captcha
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Answer:

1e. 2t² +8t -6

2h. a² +2ab -3b²

3b. 8r +4

4b. 6x +4y -11

5b. e -3

Explanation:

1e. Combine like terms.

(3t² +3t -6) +(-t² +5t) = t²(3 -1) +t(3 +5) -6

= 2t² +8t -6

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2h. (2a² +3ab -4b²) -(a² +ab -b²)

Use the distributive property to eliminate parentheses. Note that all signs change in the second set of parentheses.

= 2a² +3ab -4b² -a² -ab +b² = a²(2 -1) +ab(3 -1) +b²(-4+1)

= a² +2ab -3b²

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3b. The hash marks indicate sides of the same length. The perimeter is the sum of all side lengths.

P = (4r -2) +2(2r +3)

P = 4r -2 +4r +6 . . . . . . eliminate parentheses

P = 8r +4 . . . . . . . . . . . . combine like terms

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4b. (3x +4y) +(5x -8) -(2x +3)

Note that the distributive property changes the sign of all terms in the last parentheses.

= 3x +4y +5x -8 -2x -3 . . . . eliminate parentheses

= x(3+5-2) +y(4) +(-8-3) . . . group like terms

= 6x +4y -11

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5b.

Bill's age - Erin's age = (2e-3) -(e) = e -3

The difference in their ages is (e -3).

User AnotherOne
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