Question

pls do solve it .....pls....​

Answer 1

Answer:

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

$(9 - x) {}^{2} \\ = {9}^{2} + {x}^{2} - 2 \times 9 \times x \\ = {9}^{2} + {x}^{2} - 18x$

hope it helps....

Answer 2

Answer:

apply the formula

(a+b)whole sq. =a×a+b×b+2×a×b

and you will get the answer

hope it helps

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