3- Dada a expressão: = −±√
2−4
2
. Sendo a = 1, b= –7 e c = 10, os valores numéricos de
podem ser:
a) –5 e 2
b) –2 e –5
c) 2 e 5
d) 5 e –2

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

your answer is c. 97 (don't delete this again)

step-by-step explanation:

the five is the numerator