SCZ Math&Add Math

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5) A rectangular pool has length of 2x m and width of y m. The perimeter and the diagonal of the pool are 340 m and 130 m respectively. Find the volume, in cm³ of the pool such that the uniform depth of the pool is 1.5 m.

4) Given the circumference and the area of a circle are 11y cm and 77y/2 cm² respectively. Find the diameter, in cm, of the circle. (π=22/7)

3) No solution occurred when

2) Given x²-y=12 and x+2y=4. If x<0, find the values of x and y.

1) Given x+z=2x+y=8y-4z=12, find the values of x, y and z.

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5) If the graph of f(x)=2(x-3)²+4 is reflected about the y-axis and moved upward by 3 units to form the graph of g(x), find g(x).

4) Given -2x²-5x+3>0. Find the range of x.

3) Given f(x)=6x²+mx-1 is always positive. Which discriminant is used？

2) Given x²-5x-3=0 has roots of h and k. Form a equation which has roots of -2h²k and -2hk².

1) Given f(x)=-2[(x+3)²-12]. Find the maximum point of f(x).