Evaluate the expression for the given value or values of the variables. 2(a+c)-(b+d) if a=1, b=2, c=-1, and d=-2

Find the product.(x – 2)(4x – 9)

Find the product.(x – 10)(5x – 12)

Simplify. Write the answer with only positive exponents. Assume that all variables represent nonzero real numbers.(2x5y3)2(2y4)3

Write the number in scientific notation.76,000

Simplify the expression so that no negative exponents appear in the final result. Assume all variables represent nonzero numbers.-5

Find the product.(2x + 3)(x – 8)

Use the power rule and the power of a product or quotient rule to simplify the expression.(-6x9y3z0)2

Use the power rule and the power of a product or quotient rule to simplify the expression.(-3x4y5z0)2

Simplify the expression using the products to powers rule.(5x-7y8z-5)-3