Question
\( 6 x^{2}-19 x+10 \) Select the correct choice below, and if necessary, fill in the answer box to complete your choice. A. \( 6 x^{2}-19 x+10=\square \) B. The trinomial is prime.
Ask by Weston Higgins. in the United States
Mar 19,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
\(6x^{2}-19x+10 = (2x-5)(3x-2)\).
Solution
We begin with the trinomial
\[
6x^{2}-19x+10
\]
and aim to factor it. Notice that the product of the coefficient of \(x^2\) and the constant term is
\[
6 \times 10 = 60.
\]
We need two numbers whose product is 60 and whose sum is \(-19\). The numbers \(-15\) and \(-4\) satisfy these conditions because
\[
-15 \times -4 = 60 \quad \text{and} \quad -15 + (-4) = -19.
\]
Rewrite the middle term \(-19x\) using \(-15x\) and \(-4x\):
\[
6x^{2} - 15x - 4x + 10.
\]
Group the terms:
\[
(6x^{2} - 15x) + (-4x + 10).
\]
Factor out the greatest common factor from each group:
\[
3x(2x - 5) - 2(2x - 5).
\]
Notice that \((2x-5)\) is common in both terms. Factor \((2x-5)\) out:
\[
(2x-5)(3x-2).
\]
Thus, the factorization of the trinomial is
\[
6x^{2}-19x+10 = (2x-5)(3x-2).
\]
The correct choice is **A:**
\[
6x^2-19x+10=(2x-5)(3x-2).
\]
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The Deep Dive
To factor \( 6x^{2} - 19x + 10 \), we look for two numbers that multiply to \( 6 \times 10 = 60 \) and add to \( -19 \). Upon inspection, \( -15 \) and \( -4 \) work perfectly since \( -15 + -4 = -19 \) and \( -15 \times -4 = 60\). Thus, we can rewrite the expression as \( 6x^{2} - 15x - 4x + 10 \) and then factor by grouping. This gives us the final factorization of \( (3x - 2)(2x - 5) \). So, the correct choice is A: \( 6 x^{2}-19 x+10=(3x-2)(2x-5) \).