Using a2 − b2 = (a + b) (a − b), find 1532 − 1472

1532 − 1472 = (153 + 147) (153 − 147) = (300) (6) = 1800

Using Asquare2 − Bsquare2 = (A + B) (A − B), Find 153square2 − 147square2

Using a²− b² = (a + b) (a − b), find 153² − 147²

153² − 147² = (153 + 147) (153 − 147)

= (300) (6) = 1800

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