solve 12 , 13 and factorise
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12):-
10a²-20ab²+10b⁴,
10(a²-2ab²+b⁴),
10[a²-(1+1)ab²+b⁴],
10[a²-ab²-ab²+b⁴],
10[a(a-b²)-b²(a-b²)],
10[(a-b²)(a-b²)],
13):-
1-2ab-(a²+b²),
1-2ab-a²-b²,
1-(2ab+a²+b²),
1-(a+b)²,
1²-(a+b)²,
[1-(a+b)].[1+(a+b)]
10a²-20ab²+10b⁴,
10(a²-2ab²+b⁴),
10[a²-(1+1)ab²+b⁴],
10[a²-ab²-ab²+b⁴],
10[a(a-b²)-b²(a-b²)],
10[(a-b²)(a-b²)],
13):-
1-2ab-(a²+b²),
1-2ab-a²-b²,
1-(2ab+a²+b²),
1-(a+b)²,
1²-(a+b)²,
[1-(a+b)].[1+(a+b)]
tina1772:
and 13
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