Question

x × x + x-90=0 solve by completing square method​

Answer 1

Answer:

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Step-by-step explanation:

x × x + x - 90 = 0

x^2 + x = 90

both side squaring

x^4 + x^2 = 90^2

x^3 = 810

Answer 2

Answer:

pls mark as brainliest

Step-by-step explanation:

x × x + x - 90 = 0

x^2 + x = 90

both side squaring

x^4 + x^2 = 90^2

x^3 = 810