Use the square root property of equality to solve (x  – 3)2 = –4. the solutions are a. -1 or 7 b. 1 or 5 c. 3+- 2i d. 3+-4i

The solution is    3 ± 2i .   The correct option is C.

Step-by-step explanation:

using the square root property of equality to solve  (x - 3)² = -4

we have;

(x - 3)² = -4

Take the square root of both-side

√(x - 3)² = ±√-4

x - 3  =  ±√4  × √-1

Not that square root of -1 is i

x - 3 = ±2i

Add 3 to both-side of the equation

x -3 + 3 = 3 ± 2i

x = 3 ± 2i

Therefore, the solution are 3 ± 2i

x = 10.1

step-by-step explanation:

all of the angles of a tirangle add up to 180º

180 - 65 = 115 (since we already know the value of one angle)

(2x + 7) + (8x + 7) = 115

(combins like terms) 10x + 14 = 115

(isolate the variable subtract 14 from both sides): 10x = 101

(find the variable divide both sides by 10): x = 101/10

x = 10.1

step-by-step explanation: