Write an equivalent expression for y(6 + y) and (6 x y) + (6 x 7)

For the first one: 6y + y^2

2nd one: 6y + 42

d) the triangle is a right triangle 60 squared +144 squared= 156 squared

step-by-step explanation:

156 squared is the hypothenuse

so 156= c

-14

step-by-step explanation:

2x2 – 2(x+4)

=2x2-2（5+4）

=4-2×9

=4-18

=-14