Given matrix B=\left[\begin{array}{cc}1 & 1 \ 8 & 3]\end{array}. Find the matrix X if, X=B^2-4 B. Hence solve for a and b given X\left[\begin{array}{c}a \ b]\end{array}=\left[\begin{array}{c}5 \ 50]\end{array}

ICSE Class X Math 2017 Solved Paper - Question 13

SECTION B (40 Marks)

Attempt any four questions from this Section

Question : 13 of 31

Marks: +1, -0

Given matrix

B={[\table 1 , 1 ; 8 , 3]}

. Find the matrix

X

if,

X=B^2-4 B

. Hence solve for

a

and

b

given

X{[\table a ; b]}={[\table 5 ; 50]}

Solution:

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