Israel started to solve a radical equation in this way
square root of x plus 6 − 4 = x
square root of x plus 6 − 4 + 4 = x + 4
square root of x plus 6 = x + 4
( square root of x plus 6 )2 = (x + 4)2
x + 6 = x2 + 8x + 16
x + 6 - 6 = x2 + 8x + 16 - 6
x = x2 + 8x + 10
x - x = x2 + 8x + 10 - x
0 = x2 + 7x + 10
0 = (x + 2)(x + 5)

x + 2 = 0 x + 5 = 0
x + 2 - 2 = 0 - 2 x + 5 - 5 = 0 - 5
x = -2 x = -5

solutions = -2, -5

what error did israel make? (2 points)

he subtracted 6 before subtracting x.

he added 4 before squaring both sides.

he factored x2 + 7x + 10 incorrectly.

he did not check for extraneous solutions.