please can someone help me answer these 20 maths questions
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18. 11.5×11.5- 2.09×2.09×2.09
132.25- 568.551896= -436.301896
que 7. √3(2+√3)
2√3+√9= 2√3+3
que8 √2(5+√2)= 2√5+√4 = 2√5+2
que 17..... 43.5+64.3/9.505 = 107.8/9.505= 11.34139926 ....
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