Pdfaner07viz
Answered

patulong po pls use method foil
[tex](x + 3)(x - 3)[/tex]
[tex](x + 5)(x - 4)[/tex]
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Sagot :

Belibersince1999viz

Answer:

1.

[tex] {x}^{2} + 3x - 3x - 9 \\ = {x}^{2} - 9[/tex]

2.

[tex] {x}^{2} - 4x + 5x - 20 \\ = {x}^{2} + x - 20[/tex]

Gcjz07viz

Answer:

x² - 9

x² + x - 20