Mathematics
29.06.2021 17:21
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Which value for x makes the open sentence true? 6 β’ 7 β 5x + x2 β₯ x3 + x2
Which value for x makes the open sentence true? 6 β’ 7 β 5x + x2 β₯ x3 + x2
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joshxg227
4,4(50 marks)
6β7β5x+x2β₯x3+x2
Lets plug in 3:
6β7β5(3)+32β₯33+32
Multiply -5 * 3:
6β7β15+32β₯33+32
Simplify all exponents:
6β7β15+9β₯27+9
Multiply 6 * 7:
42β15+9β₯27+9
Subtract 42 - 15:
27+9β₯27+9
Add 27 + 9:
36β₯27+9
Add 27 + 9:
36β₯36
So 3 is correct.
FlowerChild5037
4,7(70 marks)
Dnnjciniafdnfiv0hrhingvftohfnveoithnhr thats the answer
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