Question

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

Answer 1

Answer:

see below

Step-by-step 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