Related InterviewSolutions

• Add : (i) `3mn -5mn, 8mn - 4mn` (ii) `t-8tz, 3tz - z, z-t`
• Collect like terms and simplify the expression : `12m^2-9m+5m-4m^2-7m+10`
• Get the algebraic expressions in the following cases using variables, constants andarithmetic operations.(i) Subtraction of z from y.(ii) One-half of the sum of numbers x and y.(iii) The number z multiplied by itself.(iv) One-fourth of the product of numbers p and q.(v) Numbers x and y both squared and added.(vi) Number 5 added to three times the product of numbers m and n.(vii) Product of numbers y and z subtracted from 10.(viii) Sum of numbers a and b subtracted from their product.
• Find the values of the following expressions for `x=2.` (i) `x+4` (ii) `4x-3` (iii) `19-5x^2` (iv) `100-10x^3`
• Simplify the expression and find its value when `a =5 and b=-3` then `2(a^2+ab)+3-ab`
• Identify the terms and their factors in the following expressions Show the terms and factors by tree diagrams. (a) `x-3` (b) `1+x+x^2` (c) `y-y^3` (d) `5xy^2 + 7x^2y`
• State with reasons, which of the following pairs of terms are of like terms and which are of unlike terms : (i) `7x, 12y` (ii) `15x-21x` (iii) `4ab,7ba`
• Identify, in the following expressions, terms which are not constants. Give their numerical coefficients: `xy+4, 13-y^2, 13-y+5y^2, 4p^2 q-3pq^2+5`