Question

solve using identity (4x + 5)(4x + 1)​

Answer 1

Question

solve using identity (4x + 5)(4x + 1)​

ANSWER⤵

(4x-5)(4x-1)

FORMULA ==(x+a)(x+b)=x²+(a+b)x+ab

                     x=4x;a=-5;b=-1

=(4x)²+(-5+(-1))4x+(-5)(-1).

=16x²-5-1*4x-5*(-1)

=16x²-24x+5.

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Answer 2

Answer:

16x²+24x+5

Step-by-step explanation:

$(x + a)(x + b) = {x}^{2} + (a + b)x + ab$

$So, \: (4x + 5)(4x + 1) \\ = {(4x)}^{2} + (5 + 1)4x + 5 \times 1 \\ 16 {x}^{2} + 24x +5$

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