Question

What is the factorization of the trinomial below -x^2+x+42

Answer 1

Answer:-1(x-7)(x+6)

Explanation:

Apex

Answer 2

For the given trinomial


`a=-1, b=1 ,c=42`

We need to multiply a by c

`-1 * 42 = - 42`

We split the middle term with these two factors

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To obtain,


`- {x}^(2) + 7x -6x + 42`
We now factor


`- {x}^(2) + x + 42 \: = x( - x + 7) + 6( - x + 7)`
This implies


`- {x}^(2) + x + 42: = (x + 6)(7 - x)`