3 years ago

6,321.75 rounded to the nearest tenth

1 answer:

6 0

The tenth place is the "7". Now look at the number after it, it is a 5. If the number is a 5 or greater, round the "7" up to 8. If it is less than 5, keep it at "7". Your answer is 6,321.8

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Hello,

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$(x-2a-3b)(x-3a-2b)=x^2-(2a+3b+3a+2b)x+(2a+3b)(3a+2b)\\= x^2-5(a+b)x+6a^2+6b^2+9ab+4ab$

and we can notice that

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