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3 years ago

What is the solution of square root of x plus twelve equals x

Mathematics

2 answers:

Bess [88]3 years ago

7 0

Answer:

x=4

Step-by-step explanation:

√x+12=x

x+12=x2(Square both sides)

x+12=x2

x+12−x2=x2−x2(Subtract x^2 from both sides)

−x2+x+12=0

(−x−3)(x−4)=0(Factor left side of equation)

−x−3=0 or x−4=0(Set factors equal to 0)

x=−3 or x=4

x=−3(Doesn't work in original equation)

x=√x+12

Sophie [7]3 years ago

7 0

Answer:

x = 16

Step-by-step explanation:

Step 1: Add -12 to both sides.

x+12+−12=x+−12

x=x−12

Step 2: Solve Square Root.

x=x−12

x=(x−12)2(Square both sides)

x=x2−24x+144

x−(x2−24x+144)=x2−24x+144−(x2−24x+144)(Subtract x^2-24x+144 from both sides)

−x2+25x−144=0

(−x+9)(x−16)=0

−x+9=0 or x−16=0(Set factors equal to 0)

x=9 or x=16

Answer:

x=16

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Answer:

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Step-by-step explanation:

The question is incomplete and the data is missing so the complete question with data is below with attached files:

To celebrate there 125 anniversary, a company in Germany produced 125 very expensive teddy bears. The bears,known as the "125 karat teddy bears", are made mohair,silk and gold thread and have diamond and sapphire eyes.

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