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Chapter 2: Q4. (page 148)

Read each question. Then fill in the correct answer on the answer document provided by your teacher or on a sheet of paper.

The expression3x2+5x-12-2x2+4x+9is equivalent to which of the following?

Fx2-3x-30

Gx2+13x+6

H5x2+x-18

Jx2+3x-21

Short Answer

Expert verified

The equivalent of the given expression is x2鈭�3x鈭�30.

Step by step solution

01

Step 1. Given information.

An expression 3x2+5x鈭�12鈭�2x2+4x+9.

02

Step 2. To find the simple form of expression.

Solve the given expression,

3x2+5x鈭�12鈭�2x2+4x+9=3x2+5x鈭�12鈭�2x2鈭�8x鈭�18=3x2鈭�2x2+5x鈭�8x鈭�12鈭�18=x2鈭�3x鈭�30

03

Step 3. Conclusion.

The simple form of the given expression is x2鈭�3x鈭�30.

So, the equivalent of the given expression is x2鈭�3x鈭�30.

Hence, the correct option is F.

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