बहुपदों 2x - 7 व 5x + 9 को जोड़िए। | 10 | बहुपद | MATHS | NAVBODH | Doubtnut

86 - [15x - 7 (6x - 9) - 2 {10x - 5 (2 - 3x)}]

If the mean of the observations: x, x + 3, x + 5, x + 7, x + 10 is 9, the mean of the last three observations is

If 3 ( 5x - 7) - 4 ( 8x - 13) = 2 ( 9x - 11) - 17, then the value of ( 7x - 5)/(11 x - 9) is

If y = tan ^ (- 1) ((1) / (1 + x + x ^ (2))) + tan ^ (- 1) ((1) / (x ^ (2) + 3x + 3)) + tan ^ (- 1) ((1) / (x ^ (2) + 5x + 7)) then y '(0) = (i) - (3) / (10) (ii) - (5) / (10) (iii) - (7) / (10) (iv) - (9) / (10)

Add: 2x^(3) - 9x^(2) + 8, 3x^(2) - 6x - 5, 7x^(3) - 10x + 1 and 3 + 2x - 5x^(2) - 4x^(3)

From the sum of 6x^(4) - 3x^(3) + 7x^(2) - 5x + 1 and -3x^(4) + 5x^(3) - 9x^(2) + 7x - 2 subtract 2x^(4) - 5x^(3) + 2x^(2) - 6x - 8

Simplify : 7x + 3x(x-4) = ? A. 10x + 12 B. 10x - 12 C. 3x^(2) + 5x D. 3x^(2) - 5x