z²-7z-144 solve this quadratic equation.
Answers
Answered by
1
z^2 - 16z + 9z -144 = 0
z(z-16) - 9(z-16)= 0
(z-9)(z-16) = 0
z = 9
z = 16
hope it helped you...
z(z-16) - 9(z-16)= 0
(z-9)(z-16) = 0
z = 9
z = 16
hope it helped you...
jyotishmoy6:
z(z-16)-9(z-16)=0 this stape is not correct.
According to the question
Then wht the correct step..??
z(z-16)+9(-16)=0
z^2-16z+9z-144=0,
z(z-16)+9(z-16)=0
(z+9)(z-16)=0
hence,z=-9,16
z(z-16)+9(z-16)=0
(z+9)(z-16)=0
hence,z=-9,16
correct method and correct answer
Are you understand?
yes
yes joyti your ans is correct
thanks
Answered by
1
z^2-16z+9z-144=0,
z(z-16)+9(z-16)=0
(z+9)(z-16)=0
hence,z=-9,16
z(z-16)+9(z-16)=0
(z+9)(z-16)=0
hence,z=-9,16
thanks
welcome
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