Question

6y^2-22y-40=0

Answer 1

use quadratic formula to find the roots...

Answer 2

IT'S A QUADRATIC EQUATION.....FACTORIZE

Answer 3

by 2

Answer 4

2y(3y-11-20)

Answer 5

FIND TWO NUMBERS THAT GIVES A PRODUCT OF -240 AND A SUM OF -22

Answer 6

IT'S -30 AND 8

Answer 7

THEN WRITE IT THIS WAY. . . 6y^2-30y+8y-40

Answer 8

okwhere did you get -240 and-22

Answer 9

-22 is the middle value.... i could have used just -40 but since y^2 has a coefficient which is 6 i multiply -40 by the coefficient before solving

Answer 10

-22 is d coefficient of the middle value

Answer 11

ok

Answer 12

can u finish it now?

Answer 13

whats the next step

Answer 14

group it in two places then factorize.... 6y(y-5)+8(y-5)

Answer 15

the values inside the brackets are similar so we end up with...(6y+8)(y-5)

Answer 16

and remember (6y+8)(y-5)=0

Answer 17

that implies that 6y+8=0. . . OR y-5=0

Answer 18

so the answers would be (-8/6,5)

Answer 19

yes

Answer 20

ok thanks

Answer 21

u r wlcome