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Natali [406]
3 years ago
12

-7t^2 – 2t + 9 = 0 pls solve using any method!

Mathematics
1 answer:
Aneli [31]3 years ago
8 0
-7t^2 - 2t + 9 = 0\\
-7t^2+7t-9t+9=0\\
-7t(t-1)-9(t-1)=0\\
-(7t+9)(t-1)=0\\
t=-\dfrac{9}{7} \vee t=1
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