Math, asked by GSadmuthe, 1 year ago

z²-7z-144 solve this quadratic equation.

Answers

Answered by Iamkeetarp

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...

jyotishmoy6: z(z-16)-9(z-16)=0 this stape is not correct.

jyotishmoy6: According to the question

AnushkaChopade: Then wht the correct step..??

jyotishmoy6: z(z-16)+9(-16)=0

jyotishmoy6: z^2-16z+9z-144=0,
z(z-16)+9(z-16)=0
(z+9)(z-16)=0
hence,z=-9,16

jyotishmoy6: correct method and correct answer

jyotishmoy6: Are you understand?

GSadmuthe: yes

AnushkaChopade: yes joyti your ans is correct

jyotishmoy6: thanks

Answered by jyotishmoy6

1

z^2-16z+9z-144=0,
z(z-16)+9(z-16)=0
(z+9)(z-16)=0
hence,z=-9,16

GSadmuthe: thanks

jyotishmoy6: welcome

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