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o-na [289]
4 years ago
6

What is the difference of the two polynomials (9x^2+8x)-(2x^2+3x)

Mathematics
2 answers:
Burka [1]4 years ago
5 0

Answer:

7x² + 5x

Step-by-step explanation:

Given

(9x² + 8x) - (2x² + 3x) ← distribute parenthesis, second by - 1

= 9x² + 8x - 2x² - 3x ← collect like terms

= (9x² - 2x² ) + (8x - 3x)

= 7x² + 5x

Setler79 [48]4 years ago
3 0

Distribute the negative sign:

(9x^2+8x)-(2x^2+3x)=9x^2+8x-2x^2-3x

Gather like terms:

9x^2+8x-2x^2-3x = (9x^2-2x^2) + (8x-3x) = 7x^2+5x

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9514 1404 393

Answer:

  • x = 19
  • x = 34
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Step-by-step explanation:

1. A right angle has a measure of 90°. The whole is the sum of the parts.

  (2x +3)° +49° = 90°

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__

2. A linear pair measures 180°. The whole is the sum of the parts.

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  x +146 = 180 . . . . . . . divide by °, collect terms

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3. We presume this pair of angles is supposed to be supplementary. That is, their sum is 180°.

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  x = 39 . . . . . divide by 3

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3 years ago
If f(x) varies directly with x2, and f(x) = 96 when x = 4, find the value of f(6)
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