Răspuns:
Explicație pas cu pas:
Se foloseste relatia a^2 - b^2 = (a + b)(a - b)
________
(2x + y + x - 2y)(2x + y - x + 2y) = (3x - y)(x + 3y)
(4a - b + 2a + 3b)(4a - b - 2a - 3b) = (6a + 2b)(2a - 4b)
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Răspuns:
Explicație pas cu pas:
Se foloseste relatia a^2 - b^2 = (a + b)(a - b)
________
(2x + y + x - 2y)(2x + y - x + 2y) = (3x - y)(x + 3y)
________
(4a - b + 2a + 3b)(4a - b - 2a - 3b) = (6a + 2b)(2a - 4b)