What is the factorization of the trinomial below 12x^2-x-35

Step-by-step explanation:

1) Looking attentively to . We need two find two numbers whose product is and their sum is -1.

2) These numbers are -21 and 20 their product is -420 and their sum is -1.  Prime factorization might be a good start to find those numbers. Moreover, you can make a list of numbers whose product is -420.

3) Rewrite the trinomial, with those two terms as new b terms.

4) Finally, factor them by grouping them:

a is the right answer

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)