Verified answer

1. put everything on the left side: x^2-10x+21=0

what multiplies to get 21 and adds to get -10?

answer: -7 and -3

(x-7)*(x-3) = 0

x=7 and x=3

1. put everything on the left side: x^2-10x+21=0

what multiplies to get 21 and adds to get -10?

answer: -7 and -3

(x-7)*(x-3) = 0

x=7 and x=3

2. put everything on left side= 6x^2+17x-3

multiply 3 and 6 and find the number in which when we multiply we get 18 and if we add we get 17

the no.s are 18 and -1

(x+3)(6x-1)

x=-3

x=1/6

3. 6x^2-2=11x

6x^2-11x-2=0

the two numbers are 12 and 1

6x^2+12x-x-2=0

(x+2)(6x-1)

x=2 and x=1/6