What's the correct equivalent factored form for the expression x^4 - 121

Since both terms are perfect squares, factor using the difference of squares formula, a^2-b^2=(a+b) (a-b) where a=x^2 and b=11.

(x^2+11) (x^2-11)

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Step-by-step explanation:

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.

85.3-64 = 21.3

so laura has already added 85.3 grams of chocolate powder and she has gone over the amount specified in the recipe by 21.3 grams

hope i ! have a great  day!