Question

what is 4x²-x² equal to ​

Answer 1

Answer:

Okay, first of all let you break the left hand side of the equation like this -

4-x^2 = 2^2-x^2 [use the formula : a^2-b^2 = (a+b)(a-b) ]

=> (2+x)(2-x)

So finally we get -

(2+x)(2-x) = 0

Then, solving for x, we get -

2+x = 0 and 2-x = 0

=> x= -2 and x= 2

So the answer will be -2 and 2

Thank you. :)

Answer 2

Answer:

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