Answer: x = 7 or x = -8
x² + x - 56 = 0
⇔ x² + 8x - 7x - 56 = 0
⇔ x(x + 8) - 7(x + 8) = 0
⇔ (x - 7)(x + 8) = 0
⇔ x - 7 = 0
or x + 8 = 0
⇔ x = 7 or x = -8
Step-by-step explanation:
In this question, you know that the machine packs

of a box every

of a minute. Since it is constant, you simply have to double the half a minute to a full minute and then also double the rate to get

boxes packed per minute. And

is equal to
<span>Your answer is is simply,no x and y could have a common irrational factor. </span>