factorise P ^ 4 - 81
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ANSWER IS IN THE ATTACHMENT..↗↗
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i cant understand the 3rd step
as i have written p^4 - 81 =(p^2)^2 - 9^2
in the same same way p^2 - 9 = (p)^2 - (3)^2
tq very much
tq
mark it as brainliest
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P^4-81
P^2-9^2
=(x+9)(x-9)
its wrong
but tq
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