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Chapter 5: Q. 5.7 (page 491)

Find the sum:7x2-4x+5+x2-7x+3

Short Answer

Expert verified

The sum of the polynomials is8x2鈭�11x+8

Step by step solution

01

Step 1. Given information 

Thegivenpolynomialexpressionis7x2鈭�4x+5+x2鈭�7x+3Wehavetofindthesum

02

Step 2. Identify the like terms and rewrite the expression

Wehave7x2鈭�4x+5+x2鈭�7x+3Rewritewithouttheparentheses,rearrangingtogettheliketermstogether鈬�7x2鈭�4x+5+x2鈭�7x+3=7x2+x2鈭�4x鈭�7x+3+5

03

Step 3. Operate the like terms

鈬�7x2鈭�4x+5+x2鈭�7x+3=7x2+x2鈭�4x鈭�7x+3+5=7+1x2鈭�4+7x+8=8x2鈭�11x+8

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Most popular questions from this chapter

In the following exercises, multiply the binomials. Use any method.

y-6y-2

Multiply each pair of conjugates using the product of the conjugates pattern.

7w+10x7w-10x

Solve the square using the binomial squares pattern.

4y3-22

When you convert a number from decimal notation to scientific notation, how do you know if the exponent will be positive or negative

Use synthetic division to find the quotient and remainder.

x3-6x2+5x+14is divided byx+1
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