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प्रश्न
Show that x is rational, if x2 = 16.
संख्यात्मक
उत्तर
x2 = 16
x = `sqrt16`
x = `sqrt(4 xx 4)`
x = 4
It is rational.
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अध्याय 1: Rational and Irrational Numbers - Exercise 1 (D) [पृष्ठ २३]
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संबंधित प्रश्न
Add the following rational numbers:
\[\frac{- 7}{27} and \frac{11}{18}\]
Add and express the sum as a mixed fraction:
\[\frac{- 12}{5} \text{and} \frac{43}{10}\]
Re-arrange suitably and find the sum in each of the following:
\[\frac{2}{3} + \frac{- 4}{5} + \frac{1}{3} + \frac{2}{5}\]
Subtract the first rational number from the second in each of the following:
\[\frac{1}{4}, \frac{- 3}{8}\]
Multiply:
\[\frac{- 2}{9} \text{by} \frac{5}{11}\]
Simplify:
\[\left( \frac{13}{7} \times \frac{11}{26} \right) - \left( \frac{- 4}{3} \times \frac{5}{6} \right)\]
Fill in the blanks:
Reciprocal of\[\frac{1}{a}, a \neq 0\]
Mark the following pairs of rational numbers on the separate number lines: `3/4` and `- 1/4`
Compare: `-1 1/2 and 0 or -3/2 and 0`
If `r/s` is a rational number, then s cannot be equal to zero.
