Question

multiply.
$(u + 5)(u - 3)$
simplify your answer.

Explanation:

Step1: Apply FOIL method

$(u+5)(u-3) = u\cdot u + u\cdot(-3) + 5\cdot u + 5\cdot(-3)$

Step2: Calculate each term

$= u^2 - 3u + 5u - 15$

Step3: Combine like terms

$= u^2 + (-3u+5u) - 15 = u^2 + 2u - 15$

Answer:

$u^2 + 2u - 15$