25 | ( | 1 | + | x | ) | ( | 1 | + | x | ) | = | 64 |
Left side of the equation = | 25 | × | 1 | ( | 1 | + | x | ) | + | 25 | x | ( | 1 | + | x | ) |
= | 25 | ( | 1 | + | x | ) | + | 25 | x | ( | 1 | + | x | ) |
= | 25 | × | 1 | + | 25 | x | + | 25 | x | ( | 1 | + | x | ) |
= | 25 | + | 25 | x | + | 25 | x | ( | 1 | + | x | ) |
= | 25 | + | 25 | x | + | 25 | x | × | 1 | + | 25 | x | x |
= | 25 | + | 25 | x | + | 25 | x | + | 25 | x | x |
= | 25 | + | 50 | x | + | 25 | x | x |
25 | + | 50 | x | + | 25 | x | x | = | 64 |
x1= | - | 13 5 |
x2= | 3 5 |