Exercise
$\left(z+2\right)\left(z^2-2z+3\right)-\left(z-7\right)$
Step-by-step Solution
Learn how to solve combining like terms problems step by step online. Expand the expression (z+2)(z^2-2z+3)-(z-7). Simplify the product -(z-7). Multiply the single term z^2-2z+3 by each term of the polynomial \left(z+2\right). Multiply the single term z by each term of the polynomial \left(z^2-2z+3\right). When multiplying exponents with same base you can add the exponents: z^2z.
Expand the expression (z+2)(z^2-2z+3)-(z-7)
Final answer to the exercise
$z^{3}-2z+13$