Question

7y(3y - 5) + 30y

Answer 1

7y(3y - 5) + 30y


7y(3y) + 7y(-5) + 30y


21y^2 - 35y + 30y


21y^2 - 5y


So 7y(3y - 5) + 30y simplifies to 21y^2 - 5y

Answer 2

use quadratic formula

Answer 3

\[-b \pm \sqrt{b^2-4ac}/2a\]

Answer 4

where c =0 , a = 21, b =-5

Answer 5

P0sitr0n, you can't. It doesn't say it equals zero, so it's not an equation.

Answer 6

\[21y^{2} - 35y + 30y\]

\[21y ^{2} - 5y\]

Distribute where necessary and combine like terms.