yo i got this math test on wednesday and like i gota know how to do this someonee help plzz thanx in advanced, thats the question under it :
3h-2k
3h+4k
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2007-11-12 02:15:43 · 2 answers · asked by Joe 1 in Science & Mathematics ➔ Mathematics
Putting one expression under the other doesn't tell us what we're doing with them. Adding? If so, the h terms add up to 6h and the k terms to 2k, giving us 6h+2k. Subtracting? Then subtract like terms, giving us 0h and -6k, or just -6k.
Multiplying? Then each term on top gets multiplied by each term on the bottom: 3h(3h) = 9h², 3h(-2k) = -6hk, 4k(3h) = 12hk, and 4k(-2k) = -8k², and then you add the like terms, giving you 9h² + 6hk - 8k².
2007-11-12 02:24:22 · answer #1 · answered by Philo 7 · 0⤊ 0⤋
If this is addition, answer is 6h +2k
If this is subtraction, answer is -6k
2007-11-12 02:21:04 · answer #2 · answered by ironduke8159 7 · 0⤊ 0⤋