Factor Y4_+y2_-12 need factor of this equation

y = ±√3 and ±2i

Step-by-step explanation:

Given the equation y⁴+y²-12 = 0

(y²)²+y²-12 = 0

Let P = y²

Substitute

P²+P-12 = 0

Factorize:

P²+4P-3P -12 = 0

P(P+4)-3(P+4) = 0

(P-3)(P+4) = 0

P-3 = 0 and P+4 = 0

P = 3 and -4

When P = 3

y² = 3

y = ±√3

When P = -4

y² = -4

y² = ±√-4

y = ±2i

Hence the value of y is ±√3 and ±2i

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

what level of math? also i don't need to be paid if i can you.