7а²+а-35а-5=7а²-34а-5
9а⁴+15а³+6а²-15а³-25а²-10а+6а+10а+4=9а⁴-19а²+6а+4
=7a2+a-35a-5=7a2-34a-5
=9a4+15a3+6a2-15a3-25a2-10a+6a2+10a+4=9а4-19а2+6а+4
7а²+а-35а-5=7а²-34а-5
9а⁴+15а³+6а²-15а³-25а²-10а+6а+10а+4=9а⁴-19а²+6а+4
=7a2+a-35a-5=7a2-34a-5
=9a4+15a3+6a2-15a3-25a2-10a+6a2+10a+4=9а4-19а2+6а+4