p is non zero root of the x^2-px+q=0 Which one is true?
q>0
q=0
Zero is the other root
更新1:
In a two digit number,the sum of the digits is 9.the square is less than the number by 29 If the digit is unit x,set up an equation in x
更新2:
the area of a rectangle playground is 72 a^2 m^2 If the perimemter is 41 a m find the dimensions
更新3:
no.4 the graph of y=k(x-1)(x-3),cut the x aixs at A and B and the y-axis at R If the area is 6 sq.unit ,find the value of k
更新4:
the area of ABR is 6 sq.unit