Question

texascollegebridge
study paths initial diagnostic: tx math bridge - stage 2
tx math bridge - s
exponents and polynomials
progress:
the movement of the progress bar may be uneven because questions can be worth more or less (including zero)
subtract: $(6f^2 - 9f + 10) - (-2f^2 - f + 3)$
$\circ$ $8f^2 - 8f + 7$
$\circ$ $4f^2 - 10f + 7$
$\circ$ $4f^2 - 10f + 13$
$\circ$ $8f^2 - 10f + 7$
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Explanation:

Step1: Remove parentheses

$(6f^2 - 9f + 10) - (-2f^2 - f + 3) = 6f^2 - 9f + 10 + 2f^2 + f - 3$

Step2: Combine like terms for $f^2$

$6f^2 + 2f^2 = 8f^2$

Step3: Combine like terms for $f$

$-9f + f = -10f$

Step4: Combine constant terms

$10 - 3 = 7$

Step5: Form the result

$8f^2 - 10f + 7$

Answer:

A. $8f^2 - 10f + 7$