(a4-a3+a2-a+1)÷(a3-2)
Answers
I Hope u understand!
step 1 pull out like factors
a4+a3-a2-a
a.(a3+a2-a-1)
checking for a perfect cube
a3+a2-a-1 is not a perfect cube
trying to factor by pulling out
factoring a3 +a2-a-1
thoughtfully split the expression at hand into groups each group having two terms
group 1:-a-1
group 2:a3+a2
pull out from each group seperatly :
group 1:(a+1).(-1)
group 2 :a+1 .a2
add up the two groups
trying to factors as a difference of squares
factoring :a2-1
theory : a difference of two perfect squares a2-b2 can be factored into a+b .a-b
proof a+b .a-b =
a2-ab +ba-b2=
a2-ab+ab -b2=
a2-b2
note ab =ba is commutative property of multiplication
note -ab+ab equals zero is therefore eliminated from the expression
check :1 is th square of 1
check:a2 is the square of a1
factorization is a+1.a1
multiplyiing xponnential expression
multiply a+1 by a+1
final result. a+1square . a - 1
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