Math, asked by sheikhnouman20, 1 year ago

4(-5)²+3(-5)-9 = 4(-5-α)(-5-β).The answer (5+α)(5+β)comes -19 ,but it is 19 .can anyone show me how the -sign gets cancelled

Answers

Answered by mahichhabra

as
4(-5-a)(-5-b) = 76
(-5-a)(-5-b) = 19
now
-5-a = -1(5+a)
and
-5-b = -1(5+b)
this becomes
(5+a)(5+b)(-1 x -1) = 19
as -1 x -1 = +1
so it becomes
(5+a)(5+b) = 19

mahichhabra: well 3 becomes positive

sheikhnouman20: yes. I typed it wrong

mahichhabra: well hope you understood

mahichhabra: any other problems??

sheikhnouman20: so when its multiplication then i cant take -1common for both

mahichhabra: you can take one -1 outside from 1 bracket

sheikhnouman20: but -1 would become 1

sheikhnouman20: ok.

mahichhabra: so if there are two brackets the will cancel out each other in case of multiplication or divide

sheikhnouman20: i got that thanks

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