Question

Solve following using appropriate method :
(i) 3x2 - x - 4 (ii) (102) 2
Q33. In fig. if ARICO​

Answer 1

here is your answer hope it will help

Answer 2

Answer

Note :- I am answering only 2nd question

$(ii) \: (102) {}^{2} = ?$

Solution :-

Using Formula :-

$(a + b) {}^{2} = a {}^{2} + 2ab + b {}^{2}$

Put Value in formula

$(100 + 2) {}^{2}$

Required Answer :-

$(100 + 2) {}^{2} = (100) {}^{2} + 2(100)(2) + (2) {}^{2}$

$(102) {}^{2} = 10000 + 2 \times 200 + 4 \\ (102) {}^{2} = 10000 + 400 + 4 \: \: \: \: \: \: \: \\ (102) {}^{2} = 10404$

(102)² = 10404