Answer:
True
Step-by-step explanation:
The sides of a square have the same lengths, so the diagonal and two sides form a 45-45-90 right triangle. In a 45-45-90 triangle, the hypotenuse has a length with is

longer than the legs.
Therefore, the sides of the square would be

.
Rationalize the fraction be multiplying the numerator and denominator by root 2.

The 14 and 2 will reduce to 7, and the answer is A.
6mn= 216
m+5n= 29
n/2-1= 1
m^2/(n+5)= 9
Answer: 8x⁴ - 12x³ - 176x² + 420x
Step-by-step explanation:
First multiply 4x by (x - 3) which = 4x² - 12x. Next multiply (4x² - 12x) by (x + 5) which = 4x³ + 8x² - 60x. Multilying our new trinomial with the next binomial: (4x³ + 8x² - 60x)(2x - 7) = 8x⁴ + 16x³ - 120x² - 28x³ - 56x² + 420x. Combining like terms: 8x⁴ - 12x³ - 176x² + 420x. Notice that when you reduce and factor, you will end up with the starting binomials meaning this solution is correct.