Note: x^n=x× x× x× ......× x(n times)Given, 70x^4÷14x^2Consider 70x^4÷14x^2 =70x^4/14x^20ex0ex=7× 10× x× x× x× x/7× 2× x× x0ex0ex=1× 5× x× x0ex0ex= ...

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Byju's Answer

Standard VIII

Mathematics

Exponents with Unlike Bases and Same Exponent

Evaluate 70x4...

Question

Evaluate $70 x^{4} \div 14 x^{2}$

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Solution

Note: $x^{n} = x \times x \times x \times . . . . . . \times x (n t i m e s)$
Given, $70 x^{4} \div 14 x^{2}$
Consider $70 x^{4} \div 14 x^{2}$
$= \frac{70 x^{4}}{14 x^{2}} = \frac{7 \times 10 \times x \times x \times x \times x}{7 \times 2 \times x \times x} = 1 \times 5 \times x \times x = 5 x^{2}$
Hence, $70 x^{4} \div 14 x^{2} = 5 x^{2}$

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Evaluate 70x4÷14x2

Note: xn=x×x×x×......×x(ntimes)Given, 70x4÷14x2Consider 70x4÷14x2 =70x414x2=7×10×x×x×x×x7×2×x×x=1×5×x×x=5x2Hence, 70x4÷14x2=5x2

Evaluate $70 x^{4} \div 14 x^{2}$