MCQ
Tick $(\checkmark)$ the correct answer:
$y^2 + 2y - 3 = ?$
$y^2 + 2y - 3 = ?$
- A$(y - 1)(y + 3)$
- ✓$(y + 1)(y - 3)$
- C$(y - 1)(y - 3)$
- D$(y + 2)(y - 3)$
✓
Answer
Correct option: B.
$(y + 1)(y - 3)$
B. $(y - 1)(y + 3)$
Solution:
$y^2 + 2y - 3$
${-3 = 3 \times (-1), 2 = 3 - 1}$
$= y^2+ 3y - y - 3$
$= y(y + 3) - 1(y + 3)$
$= (y - 1)(y + 3)$
Solution:
$y^2 + 2y - 3$
${-3 = 3 \times (-1), 2 = 3 - 1}$
$= y^2+ 3y - y - 3$
$= y(y + 3) - 1(y + 3)$
$= (y - 1)(y + 3)$
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