7x2=14x7=21x7=28x7=35x7=42x7=49x7=56x7=63
Either: (7x + 4)(x + 4) = 7x2 + 32x + 16 or: (7x - 4)(x - 4) = 7x2 - 32x + 16
(7x + 4)(x - 1)
4
(7x + 4)(x - 5)
7x2
7x2 + y
With suitable signs between the terms, yes.
It is an algebraic expression of 3 terms
14
7x2 plus 7x5 = 49
That equals 28
7x2 + 68xy - 20y2