Find a b if a = (4,3) and b =(4,5). a. 31 C. (16,15) b. (8,8) d.-1
2 answers:
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Answer:
Step-by-step explanation:
Do FOIL, first outside inside last
3x × 3x = 9x^2
3x × -7 = -21x
7 × 3x = 21x
7 × -7 = -49
So it would just be 9x^2 - 49