1. (5x-2y)(4x-y) 2. ( (a-2)(a^2-3a+6) P.s. a^2 - a во второй степени.

Question

1. (5x-2y)(4x-y) 2. ( (a-2)(a^2-3a+6)
P.s. a^2 - a во второй степени.

Answer 1

1. 20x^2+5xy–8xy+4y^2=20x^2–3xy
+4y^2

2. a^3–3a^2+6a–2a^2+6a–12=a^3–
–5a^2+12a–12