I'm struggling with this radical. !

Hello!

To solve this radical, we would need to know our perfect squares. Perfect squares are numbers multiplied by itself. Some examples are: 2 × 2 = 4, 7 × 7 = 49, 9 × 9 = 81, 6 × 6 = 36, etc.

Since 36 is a perfect square, the square root of 36 is 6. Our next step would be to multiply -7 and 6 together because the expression, -7√36 is equal to -7 × √36.

-7 × 6 = -42

Therefore, the final answer is -42.

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.