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Marilyn Haley
Mathematics
2 March, 06:32
3x with a 2 as an exponent + 8x=35
+5
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2
)
Elvis Joseph
2 March, 06:57
0
It is (-5) (7/3) that's the answer
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Collin Rivers
2 March, 06:57
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The roots are {-5, 7/3}.
Step-by-step explanation:
I am assuming you want to solve this for x.
3x^2 + 8x = 35
3x^2 + 8x - 35 = 0 Try factoring by the 'ac' method.
ac = 3 * - 35 = - 105.
We need 2 numbers whose product is - 105 and whose sum = + 8.
These are + 15 and - 7, so we write:
3x^2 + 15x - 7x - 35 = 0 Now factor by grouping:
3x (x + 5) - 7 (x + 5) = 0 (x + 5) is common so:
(3x - 7) (x + 5) = 0
The roots are {-5, 7/3}.
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