Question

Simplify 5(3x+y)^2+6(3x+y)-8

Answer 1

Step-by-step explanation:

$5(3x + y) {}^{2} + 6(3x + y) - 8 \\ 5(3x {}^{2} + 2 \times 3x \times y + y {}^{2} ) + 6(3x + y) - 8 \\ 5(3x {}^{2} + 6xy + y {}^{2} ) + 6(3x + y) - 8 \\ 15x {}^{2} + 30xy + 5y {}^{2} + 18x + 6y - 8$

This is your answer.