Question

First factor the trinomial as a binomial square and then use the square root method to solve. Round the solution to the nearest tenth. x2 - 14x + 49 = 3
A. {5.3, 8.7}
B. {4.8, 9.2}
C. {3.5, 7.5}
D. {6.2, 8.3}

Answer 1

x^2 - 2(x)(7) + 7^2
= (x - 7)^2

Answer 2

what is the square root method?

Answer 3

(x-7)2 =3
x= +/-sqrt3 +7 ==>A

Answer 4

hoblos, can you explain how you did it?

Answer 5

0k ;)
(x-7)2 =3
=> x-7 = +/- sqrt3
=> x = +/-sqrt3 +7
get it

Answer 6

yes, thank you.

Answer 7

welcome :D