[" 5."4x^(2)+4sqrt(3)x+3=0],[" 6."4-x-5x^(2)=0quad rArrquad 52],[" 7"int(1)/(x+4)-(1)/(x-7)=(11)/(30),x!=-4,7]

(3x-4)/(7)+(7)/(3x-4)=(5)/(2)

Solve: (1)10(x)/(3-5x)=4(2)2(x)/(x-7)=(4)/(5)

Find the roots of the following equations : (1) x-(1)/(x)=3, x!= 0 (2) (1)/(x+4)-(1)/(x-7) = (11)/(30), x !=-4, 7

((5x+3)-(4x-2))/((5x+3)+(x-1))=(7)/(4)

int(5x^(2)+4x+7)/(sqrt((2x+3)^(3)))dx=

int_(0)^(1)(x^(6)-4x^(5)+5x^(4)-4x^(2))dx

lim_(x rarr0)(5^(4x)-7^(2x))/(x)

Evaluate: int x^(3)+5x^(2)-4+(7)/(x)+(2)/(sqrt(x))dx

Add: 5x^(2) + 3x - 8, 4x + 7 - 2x^(2) and 6 - 5x + 4x^(2)

3((7x+1)/(5x-3))-4((5x-3)/(7x+1))=11;x!=(3)/(5),-(1)/(7)