Find the value of `(a+b+4)` if `a=1 , b=2`

Find the values of a and b if A=B , where A=[[a+4,3b],[8,-6]],B=[[2a+2,b^2+2],[8,b^2-5b]]

Find the values of a,b,c and d, if 3[{:(a,b),(c,d):}]=[{:(a,6),(-1,2d):}]+[{:(4,a+b),(c+d,3):}] .

If a : b=2:5, . find the value of (3a+2b)/(4a+b)

Find the values of a and b for which the following holds: [[4,2],[3,-1]][[a],[b]]=[[-4],[2]]

Find the value of x, given that: A^2=B, A=[{:(,2,12),(,0,1):}] and B=[{:(,4,x),(,0,1):}]

If A= [[1,2],[3,4]] , adjA= [[4,a],[-3,b]] , then the values of a and b are: (a) a=-2, b=1 (b) a=2, b= 4 (c) a=2, b=-1 (d) a=1, b=-2

If (x+1) is a factor of 2x^(3)+ax^(2)+2bx+1 , then find the value of a and b given that 2a-3b=4.

If (x+1) is a factor of 2x^(3)+ax^(2)+2bx+1 , then find the value of a and b given that 2a-3b=4.

If A=[1-1 2-1] , B=[a1b-1] and (A+B)^2=A^2+B^2 , then values of a and b are a=4 , b=1 (b) a=1 , b=4 (c) a=0 , b=4 (d) a=2 , b=4

If a : b = 3: 8 , find the value of (4a + 3b)/(6a-b) .