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# What can be multiplied to get 135 and add to get 120?

Updated: 9/21/2023

Wiki User

11y ago

255

Gabe Kshlerin

Lvl 10
2y ago

Wiki User

11y ago

r + s = 120

r x s = 135

r = 120 - s

r = 135/s

120 - s = 135/s

0 = s - 120 + 135/s

0 = s2 -120s + 135

a=1

b= -120

c= 135

{-b + sqrt(b2 - 4ac)}/2a and {-b - sqrt(b2 - 4ac)}/2a

{120 + sqrt(14,400 - 4 x 1 x 135)}/2 x 1

and

{120 - sqrt(14,400 - 4 x 1 x 135)}/2 x 1

118.864

and

1.13575

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Q: What can be multiplied to get 135 and add to get 120?
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