25Y2 - 9 = 0
25Y2 = 9
Y2 = 9/25
take square root each side
Y = sqrt(9/25)
Y = 3/5
-----------------check
25(3/5)2 - 9 = 0
25(9/25) - 9 = 0
9 - 9 = 0
0 - 0
-------------checks
(5y - 2)(5y + 2)
(5y - 6)(5y + 6)
y squared minus 9 (y*y)- 9 cannot be solved because there is no given value for 9.
9 minus 8
-8.
It is: 9-4 = 5
3 - 3 squared = 6 * * * * * NO! 3 - 3 squared = 3 - 9 = -6
(a + 3)(a - 3)
(z-9)(z+3
x^2 +9 =x^2 -9 9=-9 No solution
(9 - 5u)(9 + 5u)
(3 - i)(3 + i)