Question

Short Answer Questions:-
1. Write the following statement in the form of algebraic expressions.
a. Product of p, twice of q and thrice of r.
2. Write the coefficient x? in the following.
a. X? – X+ 5
b. X-22 + 5x + 7
3. Add:-
a. p? - 7p -- 72 and - 19p2 + 3p - 4q?
b. 6m3 - 2n2 and - 3m8 + 5n?
4. Evaluate the following expressions for n = 5
a. 2n3 + 11
b. 90 - 4n?
class 7th
subject MATHS ​

Answer 1

Dear Student,

1 = a) x is multiplied by itself and then added to the product of x and y. Ans: x×x+x×y⇒x2+xy

(b) Three times of p and two times of q are multiplied and then subtracted from r.Ans: r−(3p×2q) ⇒r−6pq

(c) Sum of the products of a and b, b and c and c and a. Ans: ab+bc+ca

(d) Perimeter of an equilateral triangle of side x.Ans: Perimeter of equilateral triangle= 3×x⇒ 3x

You should give at least 20 points for these much questions, well only answered one