cynthiauzoma367
22.08.2021 •
Mathematics
Simplify (2^-1 +5^-1)^2 *(-5/8)^-2
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Ответ:
1.2544
Step-by-step explanation:
2^-1 = 1/2
5^-1 = 1/5
1/2+1/5 = 7/10
(7/10)^2=49/100=0.49
(-5/8)^-2 = 64/25=2.56
(2^-1 +5^-1)^2 *(-5/8)^-2 = 0.49 * 2.56 = 1.2544
Ответ:
3x+y=-3
Step-by-step explanation:
change the positive 3 to -3