Simplify (−4k4+14+3k2)+(−3k4−14k2−8). Write answer in standard form.

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

Fractions can be added and subtracted only if they're fractions. a. like b. proper c. improper d. unlike

How do you solve a question like this?