Verified Answer :

iloveonedirection

PEMDAS
P - Parentheses (or other grouping symbols)
E - Exponents 
M - Multiplication
D - Division
A - Addition
S - Subtraction

\(8x[(7+4)x^2] - [(11-7)x^4]\\ \\ 8x[(11)x^2] - [(4)x^4] \\ \\ 8x[11x^2] - [4x^4] \\ \\ 88x^3 - 4x^4 \\ \\ -4x^4+88x^3\)

If you then want to go on to factor it, your answer would be \(-4x^3(x-22)\)

carlosego

For this case we have the following expression:

8x {[(7 + 4) x ^ 2] - [(11-7) x ^ 4]}

First, we solve the parentheses:

8x {[(11) x ^ 2] - [(4) x ^ 4]}

We now resolve the brackets:

8x {[11x ^ 2] - [4x ^ 4]}

We now solve the keys:

8x {11x ^ 2 - 4x ^ 4}

We apply the distributive property:

\(88x ^ 3 - 32x ^ 5\)

Answer:

\(88x ^ 3 - 32x ^ 5\)

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