Question

how to do this sum yarr

Answer 1

Answer:

firstly factorize the x^2+2x+3.

after solve it you find two no then these no are put on that value.

after that this is solve.

Answer 2

First lets us split the middle term of x²+2x-3

x²+2x-3 = x²+3x - x + 3

taking common terms we will get

x(x+3) and -1(x+3)

so x²+2x-3 = (x-1)(x+3)

now put the values of x in the given equation

put x=1 we get=

1-3-13+15 =16-16=0

also putting x=-3 we get,

-27-27+39+25

-54+54=0

hence x²+2x-3 is a factor