Question

REPEDE , VĂ ROG!!!!!!!​

Answer 1

ex.1.

a)12(5-4)= 12 ×1= 12

b)2012(950-949) =2012 × 1 = 2012

c)28(92+8)= 28×100= 2800

d)59(950-949)= 59 × 1= 59

e)182(182-181)= 182×1= 182

f) 48(48-47-1)= 48 × 0 =48

ex.2.

a)2(x+y)

b)2(a-b+c)

c)2(xy+ab-1)

d)2(a+2)

$e)2( - {x}^{2} + 2xy + 3 {y}^{2} )$

f)2(2x+5y-7z)

ex.3.

a)x(3+4y)

b)x(a-b+z)

c)x(x+2)

$d)x(y - {x}^{2} + 2)$

$e)x( {x}^{2} + 5x - 2)$

$f)x( {x}^{3} - {x}^{2} + 3x + 6)$

ex.4.

a)(x+1)(3+a)

b)(x+1)(-4a+2b)

c)(x+1)(x+3)

d)(x+1)[(x-2)+(2x+3)]

e)(x+1)[(a-2) +4a]

f)(x+1)[(6x-7)-(x+1)]

ex.5.

a)7(x-a)

b)12(x+y)

c)24(a-b+c)

d)8a(1+a)

$e)15( {x}^{2} + 1)$

$f)11 {x}^{2} - 1)$

g)a(x+y-z)

$h) {x}^{3} ( {x}^{2} + 1)$

$i) \sqrt{3} (a - b)$

j)4x(y+2+3x)

$k) \sqrt{5}x (2 - 3a)$

$l)9a(1 + 3 {a}^{2} )$