Simplify. Write the answer with positive exponents.-10x2y ∙ -6x6y4

Simplify. Write the answer with positive exponents.-4x4y ∙ -6x5y3

Multiply.(4x + 9)(4x + 8)

Perform the indicated operations.(-4×2 + 1) – (-x3 – 10×2 – 3)

Simplify. Write the answer with positive exponents.4

Simplify. Write the answer with positive exponents.(-9)8(-9)4

Multiply.(-5x + 5)(-2x – 7)

Perform the indicated operations.(7×5 + 4×3) + (2×5 + 8×3 + 7)

Perform the indicated operations.(4×6 + 3×5) + (3×6 + 5×5 + 9)

Multiply.(4x + 7)2