What substitution should be used to rewrite x8 – 3x4 + 2 = 0 as a quadratic equation?

substitution used is u=x^4

step-by-step explanation:

rewrite as a quadratic equation

quadratic equation is in the form of

to get a quadratic equation we need to get highest exponent as 2

in our given equation , highest exponent is 8

we need to convert x^8 in square form

x^8 can be written as

lets replace 'u' with x^4

so our equation becomes

is a quadratic equation

substitution used is u=x^4

maximum area = xy = (16)(32) = 512 ft2

to maximize the area of the garden, the side of the fence parallel to the side of the house should be 32 ft long, and the other two sides should both have length 16 ft.'

source

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: