Question

pls pls help me fastly... I will make them brainlist​

Answer 1

Step-by-step explanation:

Question 9 )

Here,

Q = 3x³ - 2x² + 7x - 5

D = x - 5

So,

as a linear equation,

x - 5= 0

x = 5

so,

3 × 5³ - 2 × 5² + 7 × 5 - 5

3× 125 - 2 × 25 + 7x 5 - 5

375 - 50 + 35 -5

410 -55

355 answer

Answer 2

Answer

Construct BD of 1 unit length perpendicular to OB as fig. Join OD

By Pythagoras theorem, OD=

$\sqrt{} (2)2 + 12 \\ = 2 + 1 = 3$

Using a compass, with centre O and radius OD, draw an arc which

intersects the number line at the point L right side to 0. Then

′

L

′

corresponds to

3

. From this we can conclude that many

points on the number line can be represented by irrational numbers also.

In the same way, we can locate

n

for any positive integers n, after

n−1

has been located.