Question

what number must be added in order to make x^2+8x=34 a complete square?

Answer 1

50

Answer 2

16

Answer 3

??????

Answer 4

always take the middle number divide it by 2 and square it u will get the answer
then next step juz add both sides by that number can already

Answer 5

in this case is 8 divided by 2 =4 then u square the 4 u will get 16

Answer 6

so a perfect square would be (x+4)^2 and give us the 8x in the middle, to complete the square we have to have -16 on the other side, so we have to subtract 50 (34+16) from the equation.

Answer 7

then we get x^2+4x=34-50 --> x^2+4x=-16 --> x^2+4x+16=0 --> (x+4)^2=0.

Answer 8

hoh

given equation is x^2+8x-34=0

x^2+2(4)(x)-34=0

adding 50 makes it

x^2+8x+16=0

a perfect square

(x+2)^2

Answer 9

you mean (x+4)^2