Factor x2 - 49.
A) (x - 7)(x - 7)
B) (x + 7)(x - 7)
C) (x + 7)(x + 7)
D) (x + 49)(x + 1)
2007-05-31 02:58:15 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
B
(x+7)(x-7)
2x - 7x + 7x - 49
2007-05-31 03:00:51 · answer #1 · answered by Brandon B 3 · 0⤊ 0⤋
Use a2-b2 =(a+b)(a-b) formulae
x2-49 = x2-72 = (X+7)(X-7) which equals B
2007-05-31 10:05:30 · answer #2 · answered by GeetaKrishna 1 · 0⤊ 0⤋
B
(x+7)(x-7)
when you multilpy the two x's you will get x^2
when you multiply the +7 with the -7 you will get -49
2007-05-31 10:03:27 · answer #3 · answered by jennaput 2 · 0⤊ 0⤋
B
2007-05-31 10:06:59 · answer #4 · answered by Steel Rain 7 · 0⤊ 0⤋
B
2007-05-31 10:03:33 · answer #5 · answered by Teodor Onisor AKa Boris 1 · 0⤊ 0⤋
B
2007-05-31 10:00:42 · answer #6 · answered by Ben 2 · 0⤊ 0⤋
D
2007-05-31 10:00:57 · answer #7 · answered by hemorreilly 1 · 0⤊ 2⤋