Question

find the zeroes of the following x2+4x-21​

Answer 1

Answer:

Question⤵

➡Find the zeroes of the following x²+4x-21

Answer⤵

➡(-7) and 3

Solution⤵

➡x²+4x-21

➡x²+(7-3)x-21

➡x²+7x-3x-21

➡x(x+7) -3(x+7)

➡(x+7) (x-3)

➡x+7=0 , x-3=0

➡x= -7 , x= 3

so the zeros are (-7)and 3.

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