If a=5 and b = (-2)
find the value of
(1) 3a-2b
and
(2) 3a²-2b+5
Answers
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Step-by-step explanation:
a=5 and b-(-2 )
(1)=3a-2b
=3×5-(2×-2)
=15-(-4)
=15+4
=19
(2)=3a^2-2b+5
=3(5)^2-2×(-2)+5
=3×25+4+5
=75+9
=84
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