Algebra 1
What value should come in place of the question mark? =?
Let
⇒
Therefore,
=
⇒ x – y = 22 or x = 25, y = 3
Thus,
Again, let
⇒ ,
⇒ p – q = 1 or p = 4, q = 3
Now,
What value should come in place of the question mark? 1.236 × 10¹⁵ - 5.23 × 10¹⁴ =?
What value should come in place of the question mark?
Given exp.
We rationalise the denominator of each
and
Thus
= 5
What value should come in place of the question mark? 9821 – [48 + {12 × (153 + 24)}] =?
9821 – [48 + {12 × 177}]
= 9821 – [48 + 2124]
= 9821 – 2172 = 7649.
= ...... = +
= = = = =
Then, 8x – 7 × 2 = 49 – 48 + x²
⇒ 8x – 14 = 1 + x²
⇒ x² – 8x + 15 = 0
⇒ (x – 3)(x – 5) = 0
⇒ x = 3 or x = 5.
(where a = 469, b = 174)
What value should come in place of the question mark? = ?
= =
What value should come in place of the question mark? (17)³˙⁵ × (17)? = 17⁸
Let (17)³˙⁵ × (17)x = 17⁸.
Then, (17)³˙⁵ + x = 17⁸.
∴ 3.5 + x = 8
⇒ x = (8 – 3.5)
⇒ x = 4.5
= 0.4 + 1.1 = 1.5
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