Răspunsuri

2014-05-12T17:01:13+03:00
A) folosesti formula a²-b²=(a-b)(a+b) a=4x+3, b=10
(4x+3-10)(4x+3+10)=0
(4x-7)(4x+13)
b) a=3x-1, b= \sqrt{6}
(3x-1- \sqrt{6)} )(3x-1+ \sqrt{6} )
c).a= 4x+3, b=2 \sqrt{2}
(4x+3-2 \sqrt{2} )(4x+3+2 \sqrt{2} )
d). a=x-2, b= \sqrt{2}