Question

solve 12 , 13 and factorise

Answer 1

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)]