How many solutions does this system of equation have x 2y

How many solutions does this system of equation have? x - 2y = -8 -x + 2y = 8 Multiply, and simplify your answer: (5y - 6)(7y^2 + 4y - 2) =

Solution

25.The equations x-2y = -8 and –x+2y = 8 are same. The 2^nd equation is same as the 1^st equation multiplied by -1. Thus, we have only one equation in 2 variables which will have infinite solutions( y will have one value for each value of xwhich can keep varying).

26. (5y-6)(7y²+4y-2)= 5y(7y²+4y-2) -6(7y²+4y-2) = 35y³ +20y²-10y -42y² -24y +12 = 35y³ -22y²-34y+12