Answers

2016-07-28T23:12:41+08:00
X² + 4x - 45 = 0
x² + 4x = 45
x² + 4x + 4 = 45 + 4
√ x + 4 = √ 49
x + 4 = +- 7
x = -2 +-  7
5 and -9


y² + 4y - 32 = 0
y² + 4y = 32
y² + 4y + 4 = 32 + 2
√ y + 4 = √ 36
y + 4 = +- 6
y = -2 +- 6
4 and -8
1 1 1
2016-07-28T23:16:48+08:00
                             thats my answer
hope u understand
1 1 1
m²+8m+7=0 how about this? pasolve haha thank you
m² + 8m + 7 = 0
m² + 8m = -7
m² + 8m + 16 = -7 + 16
√ (m + 8)^2 = √ 9
m + 8 = +- 3
m = -8 + 3
m= -5
m = -11