Question

fi) p(x) = x2 - x - 12​

Answer 1

Answer:

x^2 - x- 12

a= 1 , b= -1 , c= -12

x= [(-b) +- √(b^2 - 4ac)] / 2

x= [(-(-1)) +- √((-1)^2 - 4* 1 * -12 )] / 2

x= [1 +- √ 1 + 48 ] / 2 { (-) * (-) = +}

x= [1 +- √ 49 ] / 2

x= [1 +- 7 ] / 2

positive part negative part

x = [1 + 7 ] / 2 x = [ 1-7 ] / 2

x= [8 ] / 2 x= [ -6 ] / 2

x= 4 x= - 3