(4x+5)(4x+5)
Yes. The answer is......................................................................................................................................................................................................................................................2.
78 - without the aid of a calculator !
(4x + 5)(4x + 5)
4x+9=25 4x=16 x=4
Instead of -25 plus - 16, think of it as -25 - 16. 25 mins 16 equals -41.
75 + 16 + 25 = 116
(4x+5)(4x+5)
Yes. The answer is......................................................................................................................................................................................................................................................2.
4x+516x2 + 40x + 25= (4x + 5) (4x + 5)
78 - without the aid of a calculator !
n + 16 = 25 Subtract '16' from both sides. n + 16 - 16 = 25 - 16 Collect terms n = 9
16x2 + 40x + 25 = 16x2 + 20x + 20x + 25 = 4x(4x + 5) + 5(4x + 5) = (4x + 5)(4x + 5) = (4x + 5)2
(4x + 5)(4x + 5)
4x+9=25 4x=16 x=4
v + 16 when v = 9 Substitute 9 in where you see v. 9 + 16 = 25
Anton Heinrich Springer?