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Elis [28]
3 years ago
13

Factorise 2x²-9x+10 (this must be put in two brackets)

Mathematics
2 answers:
kap26 [50]3 years ago
8 0
2 x^{2} -9x+10=2 x^{2} -4x-5x+10=2x(x-2)-5(x-2)= \\ =(x-2)(2x-5).
galben [10]3 years ago
4 0
Find both roots :
\Delta=81-80=1 hence r=\frac{9\pm1}4=\frac{5}2\text{ or }2

Thus it is 2(x-\frac{5}2)(x-2)
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