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Expand and simplify (6x+9)(4x+7)

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

Answer = 24x²+ 42x + 36x +63

= 24x²+ 78x + 63

JG

Answered by Jenna G. • Maths tutor

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