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Syllabus

Expand: (y + 4)(y - 3) -

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Question

Expand: (y + 4)(y - 3)

Sum

Solution

(y + 4)(y - 3)

= y2 + (4 - 3)y + (4) × (-3)

= y2 + y - 12.

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Expansion of (x + a)(x + b)
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