Exercise
$\left(x+6\right)\left(x+3\right)-3\left(x-9\right)$
Step-by-step Solution
Learn how to solve problems step by step online. Expand the expression (x+6)(x+3)-3(x-9). Multiply the single term x+3 by each term of the polynomial \left(x+6\right). Multiply the single term x by each term of the polynomial \left(x+3\right). When multiplying two powers that have the same base (x), you can add the exponents. Multiply the single term 6 by each term of the polynomial \left(x+3\right).
Expand the expression (x+6)(x+3)-3(x-9)
Final answer to the exercise
$x^2+6x+45$