1.It is given that a:b+4=3:7
a)Express a in term of b.
b)If 4a+5b=74 , find the values of a and b .
2.If 5(y^2 -1)+Ay-10Ξ(y-B)(Cy+5) , find the vlues of the unknows A ,B and C.
maths
2007-08-20 9:26 pm
回答 (1)
2007-08-20 10:58 pm
收錄日期: 2021-04-28 23:28:55
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