`7x-(4x-3)=2x-5`

Check whether the following are quadratic equations : (1) (x-3)^(2)=x(2x-5) (2) (2x-3)(8x+1) = (4x+5)(4x-5) (3) (5x+3)(x-2)=(4x+3)(2x-1) (4) (2x+5)^(3)=8(x-1)^(3) (5) x^(2)+7x-8=x(x+5) (6) x^(3)+9x^(2)-7x+2=(x+3)^(3)

Simplify :3x^(2)-[7x-{5x^(2)-(2x-3)(4x-2)-5}-2]

If f(x)=7x^(4)-2x^(3)-8x-5 find f(-1)

Simplify (4x^2+2x^2-3(x-7)-(-2x^4-2x^2+3x-5))

Solve the equation (3x^4+x^2-2x-3)/(3x^4-x^2+2x+3)=(5x^4+2x^2-7x+3)/(5x^4-2x^2+7x-3)

Add ; 7x^2-4x+5,\ -3x^2+2x-1\ a n d\ 5x^2-x+9.

Add 7x^(2)-4x+5,-3x^(2)+2x-1 and 5x^(2)-x+9

Divide P(x)=2x^5-5x^4+7x^3+4x^2-10x+11 by g(x)=x^3+2

Solve each of the following equations and also check your result in each case: ((45-2x))/(15)-((4x+10))/5=((15-14 x))/9 5((7x+5)/3)-(23)/3=13-(4x-2)/3 (7x-1)/4-1/3\ (2x-(1-x)/2)=(10)/3 (0. 5(x-0. 4))/(0. 42\ )-(0. 6(x-2. 71))/(0. 42)=x+6. 1