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McGraw Hill Integrated II, 2012 View details

6. Solving x^2+bx+c=0

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Exercise 52 Page 51

Factor the given expression.

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Practice makes perfect

We are given a rectangle whose area is represented by the equation below.

We know that the area of a rectangle is calculated by multiplying the length by the width. Since the width is x+3, we can find the length by factoring the given expression.

x^2-3x-18

WriteDiff

Write as a difference

x^2+3x-6x-18

▼

Factor out x & (- 6)

FactorOut

Factor out x

x(x+3)-6x-18

FactorOut

Factor out - 6

x(x+3)-6(x+3)