or
Don't have an account? Register
x8-2x4+1=0, x>0
A=p+ q এবং B = p2 - q2.
y4-79y2+1 =(y2)2+2×y2×1+12-81y2 =(y2+1)2-(9y)2 [a2+2ab+b2=(a+b)2] =(y2+1+9y)(y2-1-9y) [a2-b2=(a+b)(a-b)]ans.
