Question

adding and subtracting polynomials
score: 1/2 penalty: 0.25 off
question
perform the operation.
$(4x^2 - 3x + 8) + (3x^2 - 9x + 4)$
answer attempt 1 out of 2
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Explanation:

Step1: Combine like terms for $x^2$

$4x^2 + 3x^2 = 7x^2$

Step2: Combine like terms for $x$

$-3x + (-9x) = -12x$

Step3: Combine constant terms

$8 + 4 = 12$

Step4: Write the final polynomial

$7x^2 - 12x + 12$

Answer:

$7x^2 - 12x + 12$