Question

am nevoie urgent sami faceti aceste 2 exercitii
va dau 70 de puncte ​

Answer 1

Răspuns:

Explicație pas cu pas:

3a)

8xy(4x + y^2)

b)

(3x - 2y)^2

c)

(9x - 5 + 5x + 4)(9x - 5 - 5x - 4) = (14x - 1)(4x - 9)

4a)

a(a - 1)/5(a - 1) = a/5

Answer 2

Răspuns:

3.

a)32x²y+8xy³=40x²y³

b)9x²-12xy+4y²=7x²y²

c)(9x-5)²-(5x+4)²=8-18=10

4.

a)a²-a

—— =5

5a-5