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Z^4-13z^2+36=0

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Z^4-13z^2+36=0

Posted by Krishna Bansal 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Yogita Ingle 6 years, 10 months ago

(z -3)(z + 3) (z - 2)(z + 2) = 0
z = 3,-3,2 or -2

0Thank You

Yogita Ingle 6 years, 10 months ago

z⁴ - 9z² - 4z² + 36 = 0
z² (z² - 9) - 4(z² - 9) = 0
(z² - 9) (z² - 4) = 0
(z - 9) (z + 9) (z - 4)(z + 4) = 0
z = 9,-9, 4 and -4

0Thank You

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Posted by Hari Anand 6 months, 2 weeks ago

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Don't post personal information, mobile numbers and other details.
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Posted by Kanika . 1 month, 1 week ago

CBSE > Class 10 > Mathematics