Question

Ok Father and Dauther need help with the following x2 + 8x = 180 by completing the square. Thank in advance

Answer 1

i have my teachers lesson in front of me and the homework answer too; which is -18, 11i don't know how they got that

Answer 2

to complete a square we simply have to add a useful add the square of half the x coeff to each side of the equation

8/2 = 4; and 4^2 = 16

Answer 3

the thing to remember for completing the square is (b/2)^2 b over 2 squared
you need to add that to each side....awww amistre beat me too it

but b is the second term in the trinomial in the form a^2 + b

Answer 4

x^2 + 8x + 16 = 180 + 16

compact the square

(x+4)^2 = 180 + 16

sqrt each side

x+4 = +- sqrt(176)

subtract the 4

x = -4 +- sqrt(176)

Answer 5

the answer should be 10 or -18

Answer 6

180 + 16 = 196 lol

Answer 7

not 11i

Answer 8

Thank you.

Answer 9

you can check the answer by solving the equation on the calculator ;)

Answer 10

but then how would u solve a similar eqaution tht =0 ?