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Giovanni Gaines Arithmetic on Polynomial Expressions Nov 21, 3:14:22 PM If C=x^2+7x+5 and D=x^2-8, find an expression that equals 3C-2D in standard form.
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Giovanni Gaines

Arithmetic on Polynomial Expressions
Nov 21, 3:14:22 PM
If C=x^2+7x+5 and D=x^2-8, find an expression that equals 3C-2D in standard form.

Giovanni Gaines Arithmetic on Polynomial Expressions Nov 21, 3:14:22 PM If C=x^2+7x-example-1
User Yuri Astrakhan
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1 Answer

1 vote

Answer:

3C - 2D = x² + 21x + 31

Explanation:

3C - 2D

= 3(x² + 7x + 5) - 2(x² - 8) ← distribute both parenthesis

= 3x² + 21x + 15 - 2x² + 16 ← collect like terms

= x² + 21x + 31 ← in standard form

User Ethan McCue
by
6.2k points
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