70以上 25/4 x^2 - y^2/9 550165-Factorise 25/4 x^2-y^2/9
2 Factorise (i) `49 a^270 a b25 b^2` (ii) `(25)/4x^2(y^2)/9` class9;Video transcript Use substitution to solve for x and y And they give us a system of equations here y is equal to negative 5x plus 8 and 10x plus 2y is equal to negative 2 So they've set it up for us pretty well They already have y explicitly solved for up here So they tell us, this first constraint tells us that y must be equal to Factorise 25/4 x^2-y^2/9