Factor. 2x^2 + 11x + 9 ____

Identify coefficients: Identify the coefficients a, b, and c in the quadratic expression 2x^2 + 11x + 9 by comparing it to the standard form ax^2 + bx + c. a = 2, b = 11, c = 9Find two numbers: Find two numbers that multiply to a*c (2*9 = 18) and add up to b (11). The numbers 2 and 9 satisfy these conditions because 2*9 = 18 and 2+9 = 11.Rewrite middle term: Rewrite the middle term 11x using the two numbers found in the previous step. 2x^2 + 11x + 9 can be rewritten as 2x^2 + 2x + 9x + 9.Factor by grouping: Factor by grouping. Group the first two terms and the last two terms. (2x^2 + 2x) + (9x + 9)Factor out common factor: Factor out the greatest common factor from each group. 2x(x + 1) + 9(x + 1)Since both groups contain the common factor (x + 1), factor it out. (2x + 9)(x + 1) is the factored form of 2x^2 + 11x + 9.

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Algebra 1

Factor quadratics with other leading coefficients

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Q. Factor.

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2x^2 + 11x + 9

Identify coefficients: Identify the coefficients $a$ , $b$ , and $c$ in the quadratic expression $2x^2 + 11x + 9$ by comparing it to the standard form $ax^2 + bx + c$ . $\newline$ $a = 2$ , $b = 11$ , $c = 9$
Find two numbers: Find two numbers that multiply to $a*c$ ( $2*9 = 18$ ) and add up to $b$ ( $11$ ). $\newline$ The numbers $2$ and $9$ satisfy these conditions because $2*9 = 18$ and $2+9 = 11$ .
Rewrite middle term: Rewrite the middle term $11x$ using the two numbers found in the previous step. $\newline$ $2x^2 + 11x + 9$ can be rewritten as $2x^2 + 2x + 9x + 9$ .
Factor by grouping: Factor by grouping. Group the first two terms and the last two terms. $\newline$ $(2x^2 + 2x) + (9x + 9)$
Factor out common factor: Factor out the greatest common factor from each group. $2x(x + 1) + 9(x + 1)$
Factor out common factor: Factor out the greatest common factor from each group. $\newline$ $2x(x + 1) + 9(x + 1)$ Since both groups contain the common factor $(x + 1)$ , factor it out. $\newline$ $(2x + 9)(x + 1)$ is the factored form of $2x^2 + 11x + 9$ .