a) a-1=0
a²+b²=5
b) 3a+9=0
b²-2ab=7
c) y=2x
4y²=2xy
Ola barbara
vou te ajudar
a)
a - 1 = 0
a² + b² = 5
a = 1
1 + b² = 5
b² = 4
b = 2
b = -2
b)
3a + 9 = 0
b² - 2ab = 7
a + 3 = 0
a = -3
b² + 6b² = 7
b² = 1
b = 1
b = -1
c)
y = 2x
4y² = 2xy
4y² = y²
3y² = 0
y = 0
x = 0
pronto
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Answers & Comments
Ola barbara
vou te ajudar
a)
a - 1 = 0
a² + b² = 5
a = 1
1 + b² = 5
b² = 4
b = 2
b = -2
b)
3a + 9 = 0
b² - 2ab = 7
a + 3 = 0
a = -3
b² + 6b² = 7
b² = 1
b = 1
b = -1
c)
y = 2x
4y² = 2xy
4y² = y²
3y² = 0
y = 0
x = 0
pronto