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Inverse of a Matrix

Add:iii−4𝑥2 ...

Question

Add:
(iii) $- 4 x^{2}$ and $+ 7 x$

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Solution

Solution:
$- 4 x^{2}$ and +𝟕𝒙
The sum of $- 4 x^{2}$ and +𝟕𝒙 is $- 4 x^{2} + 7 x .$

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Similar questions

Q. Find the mean marks of students from the following cumulative frequency distribution:

Marks	Number of students
o and above	80
10 and above	77
20 and above	72
30 and above	65
40 and above	55
50 and above	43
60 and above	28
70 and above	16
80 and above	10
90 and above	8
100 and above	0

Q. Question 1
Find the mean marks of students for the following distribution

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Add using number line:

(1) 5 and 3

(2) 6 and 2

(3) (−3) and (+5)

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(7) (−5) and (−2)

(8) (+6) and (−9)

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Q. Find the sum of
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(iii) −3057 and 199
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(vii) 3002 and −888
(viii) −18, + 25 and −37
(ix) −312, 37 and 192
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Q. Add the following rational numbers:
(i)

\frac{3}{4} and \frac{- 3}{5}

\frac{5}{8} and \frac{- 7}{12}

\frac{- 8}{9} and \frac{11}{6}

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\frac{7}{- 18} a n d \frac{8}{27}

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- 1 and \frac{3}{4}

2 and \frac{- 5}{4}

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Inverse of a Matrix

Standard XII Mathematics

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