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is equivalent to : |
[ ( 2-3 )-4 ]1/4 |
If any given number (suppose x) is a rational number other than zero, then x0 = 1.
?2n = 64 ? 2n = (64)2
? 2n = (2 × 2 × 2 × 2 × 2 × 2)2
? 2n = (26)2 ? 2n = 26 × 2 = 212
? n = 12.
? 3x - 3x - 1 = 18
? 3x - 1(3 - 1) = 18
? 3x - 1(2) = 18
? 3x - 1 = 18/2
? 3x - 1 = 9
? 3x - 1 = 32
Apply the Algebra law,
If aX = aY then X will be equal to Y.
means X = Y;
? x - 1 = 2
? x = 3
Then xx = (3)3 = 27
Given that, a2x + 2 = 1
Apply the algebra Law,
p0 = 1
? a2x + 2 = a0
Apply the algebra law
pX = pY then X will be equal to Y. means X = Y;
? 2x + 2 = 0
? x = -2/2 = -1
78.9 ÷ (343)1.7 x (49)4.8 = 7?
Apply the law of Fractional Exponents and Laws of Exponents
(am)(an) = am+n
am÷an=am?n
am/an=am?n
(am)n = amn
78.9 ÷ (343)1.7 x (49)4.8 = 7?
? 78.9 ÷ (73)1.7 x (72)4.8 = 7?
? 78.9 ÷ 75.1 x 79.6 = 7?
? 78.9 - 5.1 + 9.6 = 7?
? 718.5 - 5.1 = 7?
? ? = 13.4
Given, ?10 + ? x = 4
On squaring both sides, we get
10 + ?x = 16
? ?x = 6
Now, cubic on both sides, we get
x = (6)3 = 216
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