Question

Como eu resolvo ?
a- (a+7)²
b- (3x+1)²
c- (-3x-1)²
d- (x-4)²
e- ( a²+c³)²
f- (ac-1)²
g- (xy-5)²

Answer 1

a) (a+7)²
(a + 7) .(a + 7)
a² + 7a +7a + 49
a² + 14a + 49


b- (3x+1)²
(3x + 1) . (3x + 1)
9x² + 3x + 3x + 1
9x² + 6x + 1

c- (-3x-1)²
(-3x - 1) . (-3x - 1)
+9x² + 3x + 3x + 1
9x² + 6x + 1


d- (x-4)²
(x - 4) . (x - 4)
x² - 4x - 4x + 16
x² - 8x + 16

e- ( a²+c³)²
(a² + c³) . (a² + c³)
a⁴ + a²c³ + a²c³ + c⁶
a⁴ + 2a²c³ + c⁶

f- (ac-1)²
(ac - 1) . (ac - 1)
a²c² - ac - ac + 1
a²c² - 2ac + 1

g- (xy-5)²
(xy - 5) . (xy - 5)
x²y² - 5xy - 5xy +25
x²y² - 10xy + 25