Question

Simplify the expression:
y2–4y2+
–
5y2+
–
4+
–
2y2

Answer 1

Combine like terms. The y^2 terms: 1y^2 − 4y^2 − 5y^2 − 2y^2 = −10y^2. Including the constant −4 gives

−10y^2 − 4,

which can also be written as −2(5y^2 + 2).