SOLUTION: what two numbers whose product is minus−72 and whose sum is 21. These numbers will be the constants in the binomial factors.
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Question 1060137: what two numbers whose product is minus−72 and whose sum is 21. These numbers will be the constants in the binomial factors.
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!
Let x = first number
y = 2nd number
(1)
(2)
(1) —> (1a)
Substitute this into (2):
(multiplied both sides by 'x')
So or
Using (1a):
—>
—> (the two answers just swap x & y, makes sense)
—
Ans: The two numbers are -3 and 24
—
Check:
-3*24 = -72 (ok)
-3+24 = 21 (ok)
—
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