What is the answer to -sqrt(21-7x)+3=x ?

The answer to -sqrt(21-7x)+3=x is x=3,x=-4

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-sqrt(21-7x)+3=x

- 21 - 7 x + 3 = x

x = 3, x = - 4

Solution steps

- 21 - 7 x + 3 = x

Remove square roots

21 - 7 x = x^{2} - 6 x + 9

Solve

21 - 7 x = x^{2} - 6 x + 9 : x = 3, x = - 4

x = 3, x = - 4

Verify Solutions:

x = 3

True

, x = - 4

True

The solutions are

x = 3, x = - 4

x + x + x^{2} = 93

x^{2} - 2 x + 1 = 1 - x

6 x + x - 1 = 0

- 12 x^{2} + 2 x = 0

x - 10 = x - 10

What is the answer to -sqrt(21-7x)+3=x ?
The answer to -sqrt(21-7x)+3=x is x=3,x=-4
Solve for x: -sqrt(21-7x)+3=x
The solution is x=3,x=-4