Question

please answer my questions it's very urgent​

Answer 1

Answer:

$\huge\purple{\tt{\underbrace{\overbrace{\ulcorner{\mid{\overline{\underline{Answer:}}}}}}}}$

10) 6r²+7r-3

r=-1

6(-1)²+7(-1)-3

=6-7-3

=-1-3=-4

9) f(x)=2x+3

2x+3=0

x=-3/2

12) 2x²+kx

x+1=0

x=-1

2(-1)²+k(-1)

2-k=0

k=2

Answer 2

Step-by-step explanation:

Answer:

$\huge\purple{\tt{\underbrace{\overbrace{\ulcorner{\mid{\overline{\underline{Answer:}}}}}}}}$

10) 6r²+7r-3

r=-1

6(-1)²+7(-1)-3

=6-7-3

=-1-3=-4

9) f(x)=2x+3

2x+3=0

x=-3/2

12) 2x²+kx

x+1=0

x=-1

2(-1)²+k(-1)

2-k=0

k=2

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