In x and y variables -
(i) The sum is x + y
(ii) The product is xy
(iii) The summation of square is x2 - y2
Which one is correct ?

What is the sum of three expressions x² + 3, x² - 2, - 2x² + 1 ?

x² - y², y² - z² and z² - x²  are three algebraic expressions. If x = 2 and  y = - 3, what is the value of the first expression ?

x² - y², y² - z² and z² - x²  are three algebraic expressions. What is the sum of the three expressions?

Which one of the following is the coefficient of x in 5x + 3y ?

Which one is the index of x in 7x³ × x² ?

(i) 12x is the sum of x and the power of 12
(ii) The index of a is 3 in expression 4a3
(iii) The coefficient of x in the expression 3x + 4 is 3
Which one is correct on the basis of above information ?

If m = - 6 in expression  m² – 7, what is the value of the expression ?

Which one of the following is the sum of three times of x and two times of y ?

If you subtract b - a from a - b, what is difference ?