Tìm giá trị nhỏ nhất 1/A=x^2+6x+15

2/B=x^2-10x+20

3/C=4x^2-12x+15

4/D=9x^2-12+1

5/E=x^2+4x

6/F=x^2-20x

7/G=4x^2-20x

Toán 9 ạ

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is