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Oksana_A [137]
2 years ago
12

Evaluate2t²-3u+ 2; t= -5, u=72t² - 3u +2=​

Mathematics
1 answer:
Diano4ka-milaya [45]2 years ago
6 0

Step-by-step explanation:

2(-5)²-3(7)+2

-50-21+2

-71+2

69

it's substitution

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If the denominators are not the same: First, make them the same. Then add or subtract like fractions with the same denominators.

Step-by-step explanation:

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to add or subtract fractions they must have the same denominator. if the denominators are already the same then it is just a matter of either adding or subtracting the numerators if the denominators are difrent then a common denominator needs to be found.

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Hope it helps, stay safe and tell me if me wrong! :D

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