Resolve quadratic trinomials into factors: 28 – 31x – 5x2

Asked by Sakshi | 1 year ago |  85

1 Answer

Solution :-

We have,

28 – 31x – 5x2

– 5x2 -31x + 28

5x2 + 31x – 28

The coefficient of x2 is 5

The coefficient of x is 31

Constant term is -28

So, we express the middle term 31x as -4x + 35x

5x2 + 31x – 28 = 5x2 – 4x + 35x – 28

= x (5x – 4) + 7 (5x – 4)

= (x + 7) (5x – 4)

Answered by Aaryan | 1 year ago

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