2a Let [1 2 -1] 4 k -2 0 0 -1 [-k k – 4] A B = 4 -1 -2 k – 8 i Express AB in the simplest form ii Find the inverse of A in terms of k, stating the condition under which A-1 xist iii Given that X = y and C = 46 k=5 use the inverse of A to solve the equation AX=C
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
please answer 2a up to c
![2a Let
2
[-k
k – 4]
A =
4 k
-2
B =
4
-1
-2
0 0
k – 8
i Express AB in the simplest form
ii Find the inverse of A in terms of k, stating the condition under which A-1 xist
iii Given that X = |y and C =
46
k=5 use the inverse of A to solve the equation AX=C
-11
2b Given that a and b are positive, solve the simultaneous equation
a
36
log3 a + log3 b
2
2c P(x) = x³ + x² + ax +b. If P(x) is divided by (x – 2), the remainder is -7 and If P(x) is divided by
(x + 1), the remainder is 32. Find the value of a and b](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2dfb2199-11d5-44e4-9545-63a81ded0dff%2F03439fb8-06ae-4ed8-ada4-3cfcc0e5e653%2Fir9etsg_processed.jpeg&w=3840&q=75)
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