Question

Determine as raízes​ das equações.

• x² - 32x + 256 = 0


• (- x + 1)² = 9

Answer 1

x^2 - 32x + 256 =0
a=1...b=-32....c=256

Formula DELTA
delta = b^2 - 4 a c
delta = (-32)^2 - 4(1)(256)
delta = 1.024 - 4 (256)
delta = 1.024 - 1.024
delta = 0

Fornula de BRASKARA
X = - b +,- \/delta /2a
X = -(-32) +,- \/0 /2(1)
X = 32 +,- 0/2
X1 = 32 + 0/2》X1 = 32/2》X1 = 16
X2 = 32 - 0/2》X2 = 32/2》X2 = 16

As raizes sao x1=X2 = 16

(- x + 1)^2 = 9
(-x)^2 + 2(-x)(1) + (1)^2 = 9
x^2 - 2x +