factorise Z Square subtract 4z subtract 12
Answers
Answered by
6
given,
z² - 4z - 12
using the 4th indentity , we have,
(z)² + z(-6 + 2 ) + -6 × 2
which is equal to,
( z - 6 )(z + 2)
z² - 4z - 12
using the 4th indentity , we have,
(z)² + z(-6 + 2 ) + -6 × 2
which is equal to,
( z - 6 )(z + 2)
bhoomi26:
I do not understand
what? tell me :-)
understood??
Answered by
3
☆Hello friend☆
z^2 -4z-12
z^2+z(-6+2)-6×2
z^2+-6z+2z-12
z(z-6)+2(z-6)
(z+2)(z-6)
Hope it helps
☺☺☺
z^2 -4z-12
z^2+z(-6+2)-6×2
z^2+-6z+2z-12
z(z-6)+2(z-6)
(z+2)(z-6)
Hope it helps
☺☺☺
i am also in 8 th standard , ive used the identity (x + a)(x + b) = x² +x(a+b) + ab
Yes okk wait i am sortecting
sure :-)
Now is it correct?
perfect!!
thanq i have forgotten that formula
this may help me in exam
I am glad to help
okk bye
^_^
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