" 6."(a-3b)+(2a-5b)+(3a-7b)+....40" पदों तक "

If (a+3b)*(7a-5b)=0 and (a-4b)*(7a-2b)=0 . Then, the angle between a and b is

If (a+3b)*(7a-5b)=0 and (a-4b)*(7a-2b)=0 . Then, the angle between a and b is

Simplify the following:(a-2b+5c) (a-b)-(a-b-c) (2a + 3c) + (6a + b) (2c-3a-5b)

If a : b = 2 : 3, then (5a + 3b) : (6a - 2b) is equal to : यदि a : b = 2 : 3 है, तो (5a + 3b) : (6a - 2b) का मान ज्ञात करें |

((3/7)a+(5/6)b)^2

Evaluate : (7)/(2a+3b)-(5)/(2a-3b)

If a:b=2:5backslash then the value of (2a+3b):(7a+5b) is 5:3 b.6:5 c.12:5d .30:19

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)=?

Simplify the following (i) (3a^4b^3)(18 a^3b^5) (ii) (3a^7b^6)/(18 a^6b^8) ((-2a^2)/(b^3))^3