What should be added to 2l2 – m2 + n2 to get l2 + m2 + n2?
a) –l2
b) –l2+2
c) –l2 +2m2
Solution:(l2 + m2 + n2) – (2l2 – m2 + n2)
l2 + m2 + n2 – 2l2+ m2– n2
–l2 + 2m2
Multiply – 6 by 3x.
a) -18x
b) 18x
c) 18
d) 18x2
Multiply 3a2 and 2a3
a) 6a3
b) 6a5
c) 5a6
d) a6
……..are those alphabets or letters which are used to represent unknown quantities in arithmetic and algebra.
a) variable
b) coefficient
c) constants
d) exponents
The value of a……………….is not fixed.
a) coefficient
b) variable
c) constant
d) exponent
…………is the number which represents repeated multiplication of the same variable?
a) coefficient
b) variable
c) constant
d) exponent
