6. x^2 + 6x + q , what is the value of q ?
1). X^2 + 6x + q = x^2 + rx + r-2. some r is satisfied for this quotation. All variable X is satisfied for this
2) x^2 + 6x = Q = (x+m)(x+n) , some m and n is satisfied for this quotation. All variable X is satisfied for this
my ans: E
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这道题我的感觉,应该是A
1). X^2 + 6x + q = x^2 + rx + r-2. some r is satisfied for this quotation. All variable X is satisfied for this
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这道题,选A,我是这样想的:1中,这两条曲线是相同曲线。而B中有多种可能。请教大虾。
re: yeah, you are right. if he done 38 on Sat, then the least work done on other days should be 0+1+2+3+4+5=15. so there is something wrong with the question.