Question

please give me fast answer plz​

Answer 1

Step-by-step explanation:

(1)

Constant term of an algebraic expressions dont have Coefficient.

(2) (2p²-3q)(3p²-2q)

=2p²(3p²-2q)-3q(3p²-2q)

= 6p⁴-4p²q-9p²q+6q²

=6p⁴-13p²q+6q²

(3)

$\frac{3x}{4} + \frac{4x}{3} = 50\% \: of \: \frac{1}{4}$

$\frac{9x + 16x}{12} = \frac{1}{4} \times \frac{1}{2} = \frac{1}{8}$

$25x = \frac{12}{8} = \frac{3}{2}$

$x = \frac{3}{2} \times 25 = \frac{75}{2} = 37.5$

(4)

Length= 5x+3y

Breadth=3y-5x=-(5x+3y)

Area of Rectangle= -(5x+3y)²=-(25x²+9y²+30xy)

Area of Triangle=

$\frac{- (25 {x}^{2} + 30xy + 9 {y}^{2} )}{2}$

(5)

t=30m=0.5 h

distance=speed×time=3×0.5=1.5 km

New time= 0.4 h

speed= distance/time= 1.5/0.4=15/4=3.45 Km/h