Question

F(X)= 2X²- 4 /F(X)= X²-10x+25
susbstitua o x dessas equacoes por esses numeros - -1 -2 0 1 2

Answer 1

f(x) = 2x²-4
f(-1) = 2x(-1)²-4 = 2x1-4 = 2-4 = -2
f(-2) = 2x(-2)²-4 = 2x4-4 = 8-4 = 4
f(0) = 2x0²-4 = 2x0-4 = 0-4 = -4
f(1) = 2x1²-4 = 2x1-4 = 2-4 = -2
f(2) = 2x2²-4 = 2x4-4 = 8-4 = 4

f(x) = x²-10x+25
f(-1) = (-1)²-10x(-1)+25 = 1+10+25 = 36
f(-2) = (-2)²-10x(-2)+25 = 4+20+25 = 49
f(0) = 0²-10x0+25 = 0-0+25 = 25
f(1) = 1²-10x1+25 = 1-10+25 = 16
f(2) = 2²-10x2+25 = 4-20+25 = 9