Question

factorise x^2+8x+3



plz plz plz plz plz plz plz​

Answer 1

Step-by-step explanation:

x²-8x=3

x²-8x+16=3+16=19

(x-4)²=19

x-4=±√19

x=4±√19

x=8.3589 approx or x=-0.3589 approx {4-√19,4+√19} or {-0.3589,8.3589}

Answer 2

Step-by-step explanation:

x²+8x+3

a = 1, b = 8, c = 3

formula to factorize

(-b±√b²-4ac)/2a

(-8±√(8²-4(1)(3)))/2(1)

(-8±√(64-12))/2

(-8±√42)/2

(-8/2 ± √42/2)

-4 ± √42/2

-4 + √42/2

-4 - √42/2