71 = 7, 72 = 49, 73 = 343
Each time you move up a power, you multiply the answer to the previous power by 7
E.g.
7 x 7 = 49
49 x 7 = 343
and as you go down a power, you divide
343 / 7 = 49
49 / 7 = 7
So if we look at these...
73 = 343, 72 = 49, 71 = 7, 70 = 7 / 7
7 / 7 = 1
Hope it makes sense :)
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Any negative number to the power of 0 is always -1
Anything to the power of 0 has an answer of 1. So 7⁰ = 1, as well as any other number you can think of.
7^0 = 1.
5x2 + 12x + 7 = 0 This equation can be factored : (5x + 7) (x + 1) = 0 The equation equals zero when either 5x + 7 = 0 or x + 1 = 0 When 5x + 7 = 0 then 5x = -7 : x = -7/5 or -1.4 When x + 1 = 0 then x = -1 The solutions or roots of this equation are x = -7/5 and x = -1
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