Solve the radical equation x – 7 = square root of -4x+28. which statement is true about the solutions to the radical equation? there are no true solutions. there are two true solutions. there is one extraneous solution, with a value greater than 4. there is one true solution, with a value greater than 6.

x = 3 and 7

There are two true solutions.

Step-by-step explanation:

To solve , use inverse operations by squaring both sides of the equal sign.

The quadratic expression can be factored into binomials and set equal to 0 by the zero product property to find x.

(x - 3) ( x - 7) = 0

x-3 = 0 so x=3

x-7 = 0 so x=7

Now check each solution into the original equation to be sure it solve the solution and is not extraneous.

and

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hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

6 cars because if you have 8 and subtract 2 youll have 6 left over