Question

escreva as seguintes funçoes na forma y = ax2 + bx + c
a) y= x2 + 2x - 4x + 5

b) y= (x+5) (x-5)

c) y= 3 (x2-6)

d) y= x2 + 5x - 3x2 + 2 x - 3

Answer 1

a) y=x²-2x+5
b) Usando a formula (a+b)(a-b)=a²-b² > y=x²-25
c)y=3(x²-6) > y=3x²-18x
d)y=x²+5x-3x²+2x-3
y=-2x²+7x-3