If x = 10, then find the value of (4x2 + 20x + 25).
(4x2 + 20x + 25)
By using (a + b)2 = a2 + b2 + 2ab,
We get;
= (2x)2 + (5)2 + 2(2x)(5)
= (2x + 5)2
= (2(10) + 5)2
= (20 + 5)2
= (25)2
= 625