what is value of 9-2+6
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a=9+2.6^1/2……………(1).
b=57/a or a.b =57………..(2).
b=57/a= 57/(9+2.6^1/2).
b=57×(9–2.6^1/2)/(9+2.6^1/2)×(9–2.6^1/2).
b=57×(9–2.6^1/2)/(81–24).
b=57×(9–2.6^1/2)/57.
b=9–2.6^1/2………………….(3).
On adding eq (1) & (3).
a+b=18……………………(4).
a^2+b^2=(a+b)^2 -2.ab.
a^2+b^2=(18)^2–2×57 = 324–114=210 . Answer.
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Answer:
9-2= 7
7+6= 13
Answer : 13
Step-by-step explanation:
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