Asap i've been stuck with this for days
use sum and difference identities to verify which of the following are identities.
1) sin(x+ 2pi/4) =√2 sinxcosx
2) cos( x- pi/3) = 3/√2 (cost-sinx)
3) 14( sin^2x - cos^2x - tan^2x) = 14tanxsinx
4) 15( 1-cos^2x / cos^2x) = 15cot^2x
5) 11( csc^2x - sec^2x - cot^2 x)= 11tanxsecx
6) 9( 1-sec^2x/ sec^2x) = 9cot^2x

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

69.64%

step-by-step explanation: