Rationalize the denominator and simplify completely: fraction numerator x squared minus 81 over denominator square root of x minus 3 end fraction

Rationalize the denominator and simplify completely: fraction numerator x squared minus 81 over denominator square root of x minus 3 end fraction

I know the basic concept but cant do this one

I don't know how to solve using factoring

Determine the integer values of n for which n^2-18n+45 is a prime number.

Part 1) Please solve each equation in order to get the height for each one. h(0)=-16t2+528t-1440 h(5)=-16t2+528t-1440 h(15)=-16t2+528t-1440 h(25)=-16t2+528t-1440 h(35)=-16t2+528t-1440...

25x5 + 65x4 - 80x3 factor completely I came up with 5x3(5x2 + 13x + 16) am I right??>

X2-81 12(x-9) and (x-9)2, are both acceptable?

81x^2+90x+25

(x+2)3 (x-3)5 +(x-3)6 (x+2)2 I do not understand how i would break down and factor this problem

Hi , I need help understanding how to solve this. Can you please explain with steps? The question is to factor : 16y^2 - 56y + 49 Using the "special identity " : a^2...

In Algebra 1 I am given the following problem: Factor completely: (y - a)x2 - 100(y - a) Please help me.

A rectangle has an area of 24 square inches. The width is represented by x-3 and the length is x+2. Find the dimensions.

The length of a rectangle is 3 cm more than the width. The area is 70 cm squared. Find the dimensions on the rectangle

Find the dimensions on the proposed flower garden

I know we have to use a common factor "4" but I'm lost from there.

u^2-8u-9 thanks

5x^2-10x-15 thanks

12x^3-58x^2-10x thanks

A magicianâ€™s stage has a rectangle trapdoor which is (x+ 1/2) by 2x ft. The outside rectangle length is (x+ 16) ft. Part A. The total area (in square feet) of the stage can be represented...

w2v+5v-4w2-20