X1 = -5/2
<span>x2= 0
если что то не так,напиши я перерешаю
</span>
А) √49*b*а^5
б)√а^5*b^7*125
в)√50*x^3
г)√m^5*24
9⁵-3⁸=(3²)⁵-3⁸=3¹⁰-3⁸=3⁸(3²-1)=3⁸*8=3⁷*3*8=3⁷*24
так как один из множителей равен 24 следовательно кратно 24
5a²bc³=5*5²*2*3³=5*25*2*27=6750
a=5; b=2; c=3
1) <span>6√2+5√18=</span>6<span>√2+5<span>√(2*9)=6√2+5*3√2=6√2+15√2=21√2</span></span>
<span><span>2) <span>5√75-2√27=<span>5√(25*3)-2√(3*9)=25<span>√3-6√3=19<span>√3</span></span></span></span></span></span><span><span><span><span><span><span>3) <span>√2+√50-√18=<span>√2+√(25*2)-√(2*9)=<span>√2+5√2-3√2=3<span>√2</span></span></span></span></span></span></span></span></span></span><span><span><span><span><span><span><span><span><span><span>4) <span>3√20+5√45-2√80=<span>3√(4*5)+5√(9*5)-2√(5*16)=<span>6√5+15√5-8√5=1<span>3√5</span></span></span></span></span></span></span></span></span></span></span></span></span></span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>5) <span>2√48+√27+√12=<span>2√(16*3)+√(9*3)+√(3*4)=<span>8√3+3√3+2√3=13<span>√3</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>6) <span>(√3-1) (√3+1)= по формуле разность квадратов=3-1=2</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>