Question

Completing square with steps!!!
PLEASE.
-0.035x^2 + 1.4x+6 = 0

Answer 1

the step is simply; half the coeff of the x term and square it

Answer 2

1.4/2 = .7, ^2 = .49

Answer 3

then?

Answer 4

others said me to divide the whole equation by -0.035

Answer 5

then add and subtract that amount into the equation

Answer 6

..... i missed that dint i

Answer 7

yeah, you have to factor off the leading coeff first ...

Answer 8

x^2 -40x -171.428571 = 0

Answer 9

-0.035x^2 + 1.4x+6 = 0

-0.035(x^2 -1.4x/.035) +6 = 0

-0.035(x^2 -1.4x/.035 +(1.4/.035(2))^2)-(1.4^2/.035(4)) +6 = 0

maybe

Answer 10

its not that it difficult, its just messy

Answer 11

I just want to put it in completing square form,
the answer is:
-(0.035) (x - 20)² + 20

Answer 12

Sat tried to help, but his answer wasn't correct.

Answer 13

let me see if i can mutilate it from the start :)

Answer 14

Thank you a ton!

Answer 15

-0.035x^2 + 1.4x+6 = 0

-0.035x^2 + 1.4x = -6

x^2 + 1.4x/-0.035 = -6/-0.035

x^2 - 1.4x/.035 = 6/.035

x^2 - 1.4x/.035 +(1.4/.035(2))^2 = 6/.035
+(1.4/.035(2))^2

(x - 1.4/.035(2))^2 = 6/.035 +(1.4/.035(2))^2

(x - .7/.035)^2 = (6(.035)+.49)/.035^2

(x - .7/.035)^2 = (.21+.49)/.035^2

(x - .7/.035)^2 = .7/.035^2

(x - 20)^2 = .7/.035^2

(-.035)(x - 20)^2 = .7(-.035)/.035^2

(-.035)(x - 20)^2 = -.7/.035

(-.035)(x - 20)^2 = -20

(-.035)(x - 20)^2 +20 = 0

Answer 16

im trying to read.

You are awesome btw. ;)

Answer 17

i am arent i ... lol