Question

7) Scoateţi factor comun:
3(a+b) – x(a+b);
(x² + y²)+b? (x² + y2);
a
b a(m+n)? – b(m+n)?;
d 2m(2m – 1) – (2m-1).

Answer 1

Răspuns:

$a)3(a + b) - x(a + b) = \\ = (a + b)(3 - x)$

$b)( {x}^{2} + {y}^{2} ) \times a + b( {x}^{2} + {y}^{2} ) = ( {x}^{2} + {y}^{2} )(a + b)$

$c)a(m + n) - b(m + n) = (m + n)(a - b)$

$d)2m(2m - 1) - (2m - 1) = (2m - 1) \times 2m + 1$