Compute each product, and combine like terms (√x+2)(√x-2).

x-4

Step-by-step explanation:

We have to calculate each product and combine like terms in the following

(√x+2)(√x-2)

Now, (√x+2)(√x-2) {We have to apply the formula (a+b)(c+d) = a(c+d)+b(c+d)}

= √x(√x-2) + 2(√x-2)

= √x.√x -2√x +2√x-2.2

= x-2√x+2√x -4 {Since, √x.√x =x , using the formula xᵃ. xᵇ =x⁽ᵃ⁺ᵇ⁾ }

Now, combining the rational and irrational terms separately we get,

=(x-4)+(2√x-2√x)

=x-4 {Since 2√x and -2√x cancel each other}

(Answer)

for this case we have the following expression:

to solve, we rewrite the expression as:

we apply double c and we have:

thus, the quotient is 48.

so, patel found a wrong ratio and the multiplication was incorrect.

option d

answer:

it will cost 480 dollars to refurbish the larger wood floor

step-by-step explanation:

as it's a ratio of 4 that costs 384 dollars, divide the price by the ratio

384 / 4 = 96 dollars

96 dollars per unit of the ratio

now to get the price to refurbish the larger wood floor, times the price by the units

96 * 5 = 480