find the value of following Expression for if m = 2 , n = - 1, a = 3 and b = n expression
find the value of 4ab+ 3a²+b
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find the value of following Expression for if m = 2 , n = - 1, a = 3 and b = n expression
find the value of 4ab+ 3a²+b
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We know that,
The coefficient of the product of two monomials is equal to the product of their coefficients. And the variable part in the product of two monomials is equal to the product of the variables in the given monomials.
∴(−4ab)×(−3a
2
bc)
=((−4)×(−3))×(a×b×a
2
×b×c)
=((−4)×(−3))×(a×a
2
)×(b×b)×c
=(12)×(a
1+2
)×(b
1+1
)×c[∵a
m
×a
n
=a
m+n
]
=(12)×(a
3
)×(b
2
)×c
=12 a
3
b
2
c
Hence, the product =12 a
3
b
2
c