Question

Solve by factoring the trinomial as a binomial square and then use the square root method. Round to the nearest tenth if necessary.

x2 + 16x + 64 = 81
A. {9, -9}
B. {-8, 9}
C. {-17, 1}
D. no real solution Solve by factoring the trinomial as a binomial square and then use the square root method. Round to the nearest tenth if necessary.

x2 + 16x + 64 = 81
A. {9, -9}
B. {-8, 9}
C. {-17, 1}
D. no real solution @Mathematics

Answer 1

(x+8)^2 = 81
x+8 = 9
x = 1

Answer 2

and -17

Answer 3

C

Answer 4

x2 + 16x + 64 = 81
(x)^2 + 2(x)(8) + (8)^2 = 81
(x + 8)^2 = 81
taking root of both sides
x + 8 = ± sqroot(81)
x + 8 = ± 9
x = -8 ± 9
x = -8 - 9 or x = -8 + 9
x = -17 or x = 1

Answer 5

so correct solution is

C. {-17, 1}