ICSE Class X Math 2014 Solved Paper
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Question : 37
Total: 52
Let A = [
] , B = [
] C = [
] A 2 + A C − 5 B
Solution:
Given:
A = [
] , B = [
] , C = [
]
A 2 = A ⋅ A = [
] [
]
= [
]
= [
]
AC = [
] [
]
= [
] = [
]
and5 B = 5 [
]
= [
]
Now,
A 2 + A C − 5 B = [
] + [
] − [
]
= [
]
= [
]
and
Now,
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