please help me with these algebra problems! thank you!
1.) solveb-4acx= ————2afor "a"
2.)simplify:
(5y)/(4xy^{2})•(3)/(5x)•(-3x^{2}y)/(3xy)
* the / means its a fraction.
please help me with these algebra problems! thank you!
1.) solveb-4acx= ————2afor "a"
2.)simplify:
(5y)/(4xy^{2})•(3)/(5x)•(-3x^{2}y)/(3xy)
* the / means its a fraction.
1st one: easier if you use criss-cross multiplication (example: if a/b = c/d, then ad = bc):
2ax = b - 4ac : 2ax + 4ac = b : a(2x + 4c) = b : a = b / (2x + 4c)
2nd one: start by cancelling where possible; like 5y / (4xy^2) = 5 / (4xy)