Mathematics
Junior High
Solved
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2
17
(4) 3(x+2y)(x - 7y) - (x − 3y)²
-
=
2
=
501 +52 + x2
3(x²³5x4-1tY²) - (x² - 6x4 + 94²)
2
3x² - 15xy-424²_ x² + 6x²y_94²
2x²-axy - 51y+
(5) (1+a+b)(1 − a − b)
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