Question
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Factor the polynomial completely, if possible. If the expression cannot be factored, enter the expression as is. \[ 40 x^{3}-68 x^{2}-44 x \]

Ask by Hammond Reese. in the United States
Feb 28,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

The polynomial factors to \(4x(2x+1)(5x-11)\).

Solution

Factor the expression \( 40x^3-68x^2-44x \). Factor the expression by following steps: - step0: Factor: \(40x^{3}-68x^{2}-44x\) - step1: Rewrite the expression: \(4x\times 10x^{2}-4x\times 17x-4x\times 11\) - step2: Factor the expression: \(4x\left(10x^{2}-17x-11\right)\) - step3: Factor the expression: \(4x\left(2x+1\right)\left(5x-11\right)\) The polynomial \(40x^{3}-68x^{2}-44x\) can be factored completely as \(4x(2x+1)(5x-11)\).

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To factor the polynomial \( 40 x^{3}-68 x^{2}-44 x \), we can start by finding the greatest common factor (GCF) of the coefficients. The GCF of \( 40, -68, \) and \( -44 \) is \( 4 \). Factoring out \( 4x \) gives us: \[ 4x(10x^2 - 17x - 11) \] Next, we need to factor the quadratic \( 10x^2 - 17x - 11 \). This can be done by looking for two numbers that multiply to \( 10 \times -11 = -110 \) and add to \( -17 \). These two numbers are \( -22 \) and \( 5 \). Now, we can rewrite the quadratic: \[ 10x^2 - 22x + 5x - 11 \] Grouping terms gives us: \[ (10x^2 - 22x) + (5x - 11) \] \[ = 2x(5x - 11) + 1(5x - 11) \] \[ = (2x + 1)(5x - 11) \] Putting it all together, we have: \[ 4x(2x + 1)(5x - 11) \] So, the factored form of the polynomial \( 40 x^{3}-68 x^{2}-44 x \) is: \[ \boxed{4x(2x + 1)(5x - 11)} \]

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