[" 1."(7a^(2)-63b^(2))=?],[[" (a) "(7a-9b)(9a+7b)," (b) "(7a-9b)(7a+9b)],[" (c) "9(a-3b)(a+3b)," (c) "7(a-3b)(a+3b)]]

Evaluate : (x) (9a - 7b) (3a - b)

(5a-7b)^(3)+(9c-5a)^(3)+(7b-9c)^(3)

Use a suitable identity to get each of the following products. (i) (x+3)(x+3) (ii) (2y+5)(2y+5) (iii) (2a-7)(2a-7) (iv) ((3a)-1/2)((3a)-1/2) (v) (1.1m-0.4)(1.1m+04) (vi) (a^2+b^2)(-a^2+b^2) (viI) (6x-7)(6x+7) (vii) (-a+c)(-a+c) (viii) (x/2+(3y)/4)(x/2+((3y)/4) (ix) (7a-9b)(7a-9b)

Use a suitable identity to get each of the following products. (i) (x+3)(x+3) (ii) (2y+5)(2y+5) (iii) (2a-7)(2a-7) (iv) ((3a)-1/2)((3a)-1/2) (v) (1.1m-0.4)(1.1m+04) (vi) (a^2+b^2)(-a^2+b^2) (viI) (6x-7)(6x+7) (vii) (-a+c)(-a+c) (viii) (x/2+(3y)/4)(x/2+((3y)/4) (ix) (7a-9b)(7a-9b)

If A = {3, 5, 7, 9} and B = {a, b, c}, then which of the following are relations from A to B ? Give reasons for your answer. (i) R_(1) = {(3, a), (5, b), (5, c)} (ii) R_(2) = {(3, c), (9, b), (5, a)} (iii) R_(3) = {(3, c), (b, c), (7, b), (9, a)} (iv) R_(4) = {(3, b), (7, c), (c, a), (b, 9)}

If A = {3, 5, 7, 9} and B = {a, b, c}, then which of the following are relations from A to B ? Give reasons for your answer. (i) R_(1) = {(3, a), (5, b), (5, c)} (ii) R_(2) = {(3, c), (9, b), (5, a)} (iii) R_(3) = {(3, c), (b, c), (7, b), (9, a)} (iv) R_(4) = {(3, b), (7, c), (c, a), (b, 9)}

To subtract (7a-10b+c) from (-9a+6b).

(5a-7b)^3+(7b-9c)^3+(9c-5a)^3

If (10a^3 + 4b^3) : (11a^3 - 15b^3 =7:5, then (3a + 5b) : (9a - 2b)=? यदि (10a^3 + 4b^3) : (11a^3 - 15b^3 =7:5 है, तो (3a + 5b) : (9a - 2b)=?