a) 16x² -49 =0
b) m² +16m +64 =0
c) 4y ² +9 =12y
d) (x+3)² = 3(2x+3)
Ola leticia
a)
16x² - 49 = 0
16x² = 49
x² = 49/16
x1 = 7/4
x2 = -7/4
b)
m² + 16m + 64 = 0
(m + 8)² = 0
m = -8
c)
4y² - 12y + 9 = 0
(2y - 3)² = 0
2y = 3
y = 3/2
d)
(x + 3)² = 6x + 9
x² + 6x + 9 = 6x + 9
x² = 0
x = 0
pronto
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Answers & Comments
Ola leticia
a)
16x² - 49 = 0
16x² = 49
x² = 49/16
x1 = 7/4
x2 = -7/4
b)
m² + 16m + 64 = 0
(m + 8)² = 0
m = -8
c)
4y² - 12y + 9 = 0
(2y - 3)² = 0
2y = 3
y = 3/2
d)
(x + 3)² = 6x + 9
x² + 6x + 9 = 6x + 9
x² = 0
x = 0
pronto