Simplify (√3 + √5) (√3 − √5)

Step-by-step explanation:

WE can see it is in the from of

=

So Now

=

= 3 - 5

= - 2

Hope it helps;)

-2

Step-by-step explanation:

In order to expand this, we need to use FOIL (first, outer, inner, last).

The first term for each expression is √3, so we multiply those together first:

(√3) * (√3) = 3

The outer term for the first expression is √3 and the outer term for the second equation is -√5, so multiply these next:

(√3) * (-√5) = -√15

The inner term for the first expression is √5 and the inner term for the second equation is √3, so multiply these:

(√5) * (√3) = √15

The last term for the first expression is √5 and the last term for the second equation is -√5, so finally, multiply these:

(√5) * (-√5) = -5

Now, add all these together:

3 + (-√15) + √15 + (-5) = 3 - 5 = -2

The answer is -2.

Hope this helps!

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

560

step-by-step explanation:

giggidy