Sagot :
A perfect square trinomial is shown by either of the two:
(a+b)²= a²+2ab+b²
(a-b)² = a²-2ab+b²
So we just get the square root of the first and last term then we add them or subtract them according to the sign of the second term.
(a+b)²= a²+2ab+b²
(a-b)² = a²-2ab+b²
So we just get the square root of the first and last term then we add them or subtract them according to the sign of the second term.