Expand and simplify (6x+9)(4x+7)
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Using the "crabs claw" or "parrot beak" method, draw lines linking the two brackets (demonstrated on whiteboard)
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6x x 4x = 24x2
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6x x 7 = 42x
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9 x 4x = 36x
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9 x 7 = 63
Answer = 24x2 + 42x + 36x +63
= 24x2 + 78x + 63
JG
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