Question

1.plzz slove this???❤❤❤❤


$(x - 8) \times ( \frac{480}x{ + 3} ) = 480$
Speed x Time =Distance

Answer 1

Answer:

-32,40

Step-by-step explanation:

$Given:(x - 8) * (\frac{480}{x} + 3) = 480$

$=>3x-\frac{3840}{x}+456=480$

$=>3x^2 - 3840 + 456x = 480x$

$=>3x^2 + 456x - 480x - 3840 = 0$

$=>3x^2 - 24x - 3840 = 0$

$=>3(x^2 - 8x - 1280) = 0$

$=>x^2 + 32x - 40x - 1280 = 0$

$=>x(x + 32) - 40(x + 32) = 0$

$=>(x + 32)(x - 40) = 0$

$=>\boxed{x = -32,40}$

Hope it helps!

Answer 2

Answer:40

Step-by-step explanation:

Given:(x - 8) * 480/x + 3= 480

=>3x-3840/x+456=480

=>3x^2 - 3840 + 456x = 480x

=>3x^2 + 456x - 480x - 3840 = 0

=>3x^2 - 24x - 3840 = 0

=>3(x^2 - 8x - 1280) = 0

=>x^2 + 32x - 40x - 1280 = 0

=>x(x + 32) - 40(x + 32) = 0

=>(x + 32)(x - 40) = 0

X=40 , -32

40 bcz ut cant be -ve

@skb