Which binomials are a difference of two squares? 1. 6a2-25
II. 4x2+16
III. b2-9
IV. 49y2-64

A- I only
B- III only
C- III and IV
D- II, III, and IV

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Step-by-step explanation:

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see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

-2x + 7 = 7

subtract 7 from both sides.

-2x = 0

divide both sides by -2.

x = 0