5 + 2x - 2 = 2x + 5 - 2 = 2x + 3
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3/4 - 1/5= 15/20 - 4/20 = 11/20
<span>у = 0,5х^2 + 4х + 5. xmin=-b/2a=-4/1=-4 ymin=8-16+5=-3</span>
А) 10√3-4√48-√75=10√3-4√(16*3)-√(25*3)=10√3-4√(4²*3)-√(5²*3)=10√3-4*4*√3-5√3=-11√3
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б) </span><span>(5√2-√18)√2 = ( 5√2- √(2*9)) √2 = (5√2 -3√2)*√2= 2√2*√2=4
в) </span>(3-√2)²=9-2*3*√2+√2²=9-6√2+4=13-6√2