Question

Which polynomial has factors of 4x – 7 and x + 4?

3x2 + x – 3
4x2 + 9x – 28
3x2 – 7x – 3
4x2 – 23x – 28

Answer 1

(4x - 7)(x + 4)....solve by using FOIL

Answer 2

do u know the FOIL method ?

Answer 3

no

Answer 4

(4x - 7)(x + 4)
FOIL
F -- multiply first terms in each set....4x * x =
O -- multiply outside terms...4x * 4 = ?
I -- multiply inside terms...-7 * x = ?
L -- multiply last terms..-7 * -4 = ?
now do ur multiplying and what do u get ?

Answer 5

so whats 4x * x

Answer 6

its 4x^2
and whats 4x * 4.....its 16x
and -7 * x = -7x
and -7 * 4 = -28

so we have : 4x^2 + 16x - 7x - 28....combine like terms
4x^2 + 9x - 28 <-- ur answer

Answer 7

appreciate it