3 years ago

Can someone teach me how to solve this please

Mathematics

1 answer:

Alexeev081 [22]3 years ago

7 0

Multiply it all together

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I need help with number 17 please, and show work. I keep getting different answers. <br><br> 1

Alecsey [184]

$\frac{(x+1)(x-1)}{(x+1)(x-1)(x+1)} - \frac{2(x-1)}{(x+1)(x-1)(x+1)} + \frac{3(x+1)}{(x+1)(x-1)(x+1)}$

= $\frac{x^2-2-2x+2+3x+3}{(x+1)(x-1)(x+1)}$
= $\frac{x^2+x+4}{(x+1)(x-1)(x+1)}$ is what I got.

8 0

3 years ago

What is the lateral surface area of a square pyramid with a side length 11.2 cm and a slant height 20 cm

madam [21]

Notice the picture below

the lateral area, or just the area of the sides, well, the sides are really just 4 triangles, so just get the area of each, and sum them up, that's the lateral area