Question

Please help with 3 , 4 & 5 i mark Brian list

Answer 1

see below

Explanation:

Question-2:

the square of x-5 given by

`\displaystyle (x - 5) ^(2)`

use (a-b)²=a²-2ab+b² to simplify so we obtain:

`\displaystyle {x}^(2) - 10x + 25`

hence

our answer is 2)

Question-3:

to find:

`f(x) - g(x)`

substitute the value of f(x) and g(x):

`\rm \displaystyle{6x}^(2) + 8x - 5 - ( {2x}^(2) - 4x + 4)`

remove parentheses and change its sign:

`\rm \displaystyle{6x}^(2) + 8x - 5 - {2x}^(2) + 4x - 4`

combine like terms:

`\rm \displaystyle{6x}^(2) + 12x - 5 - {2x}^(2) - 4`

collect like terms:

`\rm \displaystyle{4x}^(2) + 12x -9`

hence,

our answer is 3)

Question-4:

given Polynomial:

`\displaystyle {5x}^(3) + 2 {x}^(2) + 7`

substitute the value of x:

`\displaystyle {5.(10}^(3)) + 2 ({10}^(2)) + 7`

simplify squares:

`\displaystyle 5(1000) + 2 (100) + 7`

simplify multiplication:

`\displaystyle 5000 + 2 00 + 7`

simplify addition:

`\displaystyle 5207`

hence our answer is 1)

Question-5:

given:

• 12x³y⁶,8x⁴y,20x²y⁵

notice that,

every time there's a GCF of 4x²y

hence our answer is 4)

Answer 2

(3)/(1)/(4) step by step below