Math

QuestionSimplify the expression: (9x2+93x)(46x+8x2)(9 x^{2}+9-3 x)-(4-6 x+8 x^{2}).

Studdy Solution

STEP 1

Assumptions1. We are given the expression (9x+93x)(46x+8x)\left(9 x^{}+9-3 x\right)-\left(4-6 x+8 x^{}\right). We need to simplify this expression by combining like terms

STEP 2

First, we need to get rid of the parentheses. According to the rules of algebra, when a minus sign precedes a parenthesis, we change the sign of each term inside the parenthesis.
(9x2+9x)(46x+8x2)=9x2+9x4+6x8x2\left(9 x^{2}+9- x\right)-\left(4-6 x+8 x^{2}\right) =9 x^{2}+9- x -4 +6 x -8 x^{2}

STEP 3

Next, we rearrange the terms so that like terms are together.
9x2+93x+6x8x2=9x28x23x+6x+99 x^{2}+9-3 x - +6 x -8 x^{2} =9 x^{2} -8 x^{2} -3 x +6 x +9 -

STEP 4

Now, we combine the like terms.
9x28x23x+6x+94=(98)x2+(3+6)x+(94)9 x^{2} -8 x^{2} -3 x +6 x +9 -4 = (9 -8) x^{2} + (-3 +6) x + (9 -4)

STEP 5

Perform the operations inside the parentheses.
(98)x2+(3+)x+(94)=1x2+3x+5(9 -8) x^{2} + (-3 +) x + (9 -4) =1 x^{2} +3 x +5

STEP 6

Finally, we simplify the expression by removing the coefficient1 in front of x2x^{2}.
1x2+3x+5=x2+3x+51 x^{2} +3 x +5 = x^{2} +3 x +5The simplified form of the given expression is x2+3x+5x^{2} +3 x +5.

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