Question

Simplify each expression. justify each step (5n * 9) * 2n

Answer 1

Use order of operations to simplify the expression.

$(5n \times 9) \times 2n$
$(5n \times 9) = 45n$
$(45n) \times 2n = {90n}^{2}$
Answer is
${90n}^{2}$
Hope this helps. :)