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3 years ago

Math question need help with substation please?

Mathematics

1 answer:

Juliette [100K]3 years ago

3 0

2 solutions

X= 16

X=49

Step-by-step explanation:

original equation

x-11√x+28 = 0

Isolate

-11√x = -x-28+0

Tidy up

11√x = x+28

Raise both sides to the second power

(11√x)2 = (x+28)2

After squaring

121x = x2+56x+784

Plug in 49 for x

11√(49) = (49)+28

Simplify

11√49 = 77

Solution checks !!

Solution is:

x = 49

Plug in 16 for x

11√(16) = (16)+28

Simplify

11√16 = 44

Solution checks !!

Solution is:

x = 16

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