Question

what expression does this set of algebra tiles represent?

combine like terms. for example, write 3 instead of 1 + 1 + 1.

Explanation:

Step1: Count $x^2$ terms

$-x^2 + (-x^2) = -2x^2$

Step2: Count $x$ terms

$x+x+x+x+x+x+x+x = 8x$

Step3: Count constant terms

$-1 + (-1) + (-1) + (-1) = -4$

Step4: Combine all terms

$-2x^2 + 8x - 4$

Answer:

$-2x^2 + 8x - 4$