Question

f(x) = x² + 2x - 3

find a zero of this function..show how u got that answer

Answer 1

are you familiar with factoring?

Answer 2

Yea like for examplt (1+3)(1-3)

Answer 3

factoring f(x) would give you (x+3)(x-1).... i don't know where you got (1+3)(1-3) from

Answer 4

i was just using it as an explample of factoring

Answer 5

ok, well i factored it for you. that should give you the roots of f(x)

Answer 6

Thank you so that means the the zero is -3 correct?

Answer 7

x^2 +2x -3 = 0
(x-1)(x+3) = 0

this mean

x-1=0

x_1= 1

and

x+3=0

x_2 =-3

Answer 8

ok ?

Answer 9

yes thank you