Question

Necesito de su ayudaa:c

Answer 1

y2+8y+16=16-y2
2y2+8y=0
y2+4y=0
y=0   ....   y = -4

25x2/30+36x/30 = 0
25x2 + 36x = 0
x(25x+36)= 0
x=0 ....  x = - 36/25

16x2/ 24 - 21 x /24 = 0
16x2 - 21x =0
x(16x-21)=0
x=0 ...... x= 21/16