Let xnxn-1-n, and x1 = -1. Which expression is equivalent to Xn? n(n+1)/(-2) Oxn= Oxn= n(n+1)/2 Oxn=n²+n/2 Oxn = n²/(-2) + n Xn

Q: 1-2(3t)/(3t)1/2

A: 1-2(3t)/(3t)1/2  =   = 1-2(3t)(3t)-1/2    = 1-2(3t)1-1/2    = 1-2(3t)1/2…

Q: |3x − 4| = 8

A: Given that |3x − 4| = 8

Q: 7 X= |x - 3 10 18

A:

Q: Let A = [-2  6]              [2   8] Find 3A.  3A =

A:

Q: how does 1/2 + 1/2 + 1/4 = 1?

A: here given,  the two leading candidates are running neck-and-neck, while the third candidate is…

Q: 256 = (1/4) 3x +2

A: We have to solve the given equation. Using am=1/a-m and (ab)m=ambm

Q: What is BD? B BD= 12 A X+6 20

A: Given figure:-

Q: 6 Q3. Evaluate Σή=1 5n2 - 7n.

A:

Q: Simplify (3x³ + 5z − 1) ÷ (x + 1) O 3z² + 3z +8+- O 32³-32² +8z-9 3x³ +3z² +8z+7 O 32²- 3z +8-7271

A:

Q: -7 – 6/7i

A:

Q: Find a21 of A-1 Find a22 of A-1

A:

Q: d. Evaluate **-332 (x+3)

A:

Q: 5/4(x+8)+1/4x=-9

A: here we have to solve ,  -54(x+8)+14x=-9

Q: Write each expression in the form 2 or 3 for a suitable constant k. 2x () - 3x 1 (b) 81 x/2 (a) 8…

A: We will use algebraic property of power And write that in 2^(kx) or 3^(kx) form

Q: [50-(4+8)+3]-[30+(18-3)]-

A:

Q: Find the solution for 3/4 - (-6/12)

A:

Q: Fully simplify. (2/-54)(10/48)

A: The detailed solution is as follows below:

Q: Evaluate 5(x + 2) / (2x-14)  for x = 10

A: The given expression is 5x+22x-14.

Q: +-1²-)-(4-44)dy

A: ∫yndy=yn+1n+1+c

Q: Add and simplify the result if possible 4/x+9/x

A: Required sum can be found by using the result a/b+c/b=(a+c)/b as shown on board.

Q: /2 2. 1/2

A: (a12+b12)(2a12-3b12)=2a12a12+2a12b12-3a12b12-3b12b12=2a+2a12b12-3a12b12-3b=2a-a12b12-3b

Q: Evaluate for n equals -2 n2+9n+3

A: The given expression is

Q: evaluate SSD (1+4x34y²) ½ dA where O is the bottom half of x²+4² = 16

A: Steps and explanations are as follows:In case of any doubt, please let me know. Thank you.

Q: 12(-13) is this multiplication?

A: We have to check

Q: -2 1/2 + 1 9/10

A: