Q12. is this right or the order of operations has to be inverted?

x^2 - 5x - 24

Since it's asking us to factorize this, no order of operations is needed.

We can't factor the equation in it's current form, so we need to see if it's possible to split the middle term.

List factors of -24.

1 * -24

-1 * 24

2 * -12

-2 * 12

3 * -8 (these factors fit the criteria and can be used to split the middle term.)

x^2 + 3x - 8x - 24

Factor each binomial.

x(x + 3) - 8(x + 3)

(x - 8)(x + 3) is the fully factored form of the trinomial.

it would open into a square depending on the type of envelope i’m not sure about the second part

he has 140 chickens because he has 10 times more chickens than ducks and he has 14 ducks so 14*10=140