factories the following expression by spitting the middle term z^+9z+20
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1
Answer:
z^+4z+5z+20
Step-by-step explanation:
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3
Step-by-step explanation:
z^2 +9z+20
z^2+4z+5z+20
z(z+4)+5(z+4)
(z+4)(z+5)..hope it will help you
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