Answer: 10x^4+65x^3-25x^2 that is if you are asking to Simplify
Explanation:
Apply the distributive property.
5x^2 (2x^2) + 5x^2 (13x) + 5x^2 * -5
Rewrite using the commutative property of multiplication.
5 * 2 (x^2x^2) + 5x^2 (13x) + 5x^2 * -5
Rewrite again like the step before.
5 * 2 (x^2x^2) + 5 * 13 (x^2x) - 25x^2
Multiply -5 by 5
5 * 2 (x^2x^2) + 5 * 13 (x^2x) - 25 x^2
Simplify each term.
Multiply x^2 by x^2 by adding the exponents.
5 * 2x^4 + 5 * 13 (x^2x) - 25x^2
Multiply 5 by 2.
10x^4 + 5 * 13 (x^2x) - 25x^2
Multiply x^2 by x by adding the exponents.
10x^4 + 5 * 13x^3 - 25x^2
Multiply 5 by 13.
10x^4 + 65x^3 - 25x^2