Question

splitting the middle term 7x2+49x+84

Answer 1

7x² + 49x + 84

7( x² + 7x + 12)

7( x² + 4x + 3x + 12)

7 [ x(x + 4) + 3(x + 3) ]

7 (x + 4)(x + 3)

Or,

(7x + 28)( x + 3)

Answer 2

Hello friends!!

Here is your answer :

$7 {x}^{2} + 49x + 84$


$= 7 {x}^{2} + 28x + 21x + 84$


$= 7x(x + 4) + 21(x + 4)$


$= (7x + 21)(x + 4)$


Hope it helps you... ☺️☺️☺️☺️

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