Find the number of real number solutions for the equation.
x2 + 5x + 7 = 0
A 1
B cannot be determined
C 0
D 2

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8

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step-by-step explanation:

m∠a is 90°

m∠b is 40°