Answered

1. The square root of the sum of twice a number and 4 is equal to 6. Find the number?

Sagot :

Anonymous7927viz

Answer:

√2x + 4 = 6

Square both sides.

√2x + 4² = 6²

2x + 4 = 36

Move constant to the right-hand side and change it's sign.

2x = 36 - 4

Subtract.

2x = 32

Divide both sides by 2.

x = 16

Check :

√2x + 4 = 6, x = 16

√2(16) + 4 = 6

√32 + 4 = 6

√36 = 6

6 = 6

TRUE

Hope this helps. ^^