Answer:
1. 2x²-3x+7=0
2. 2x²+6x-5=0
3. x²+7x+12=0
4. 2x²-15x-77=0
5. 2x²-6x-15=0
Step-by-step explanation:
1. Just rearrange
2. Just rearrange
3. (x+3)(x+4)=0
x²+3x+4x+12=0
x²+7x+12=0
4. (2x+7)(x-11)=0
2x²-22x+7x-77=0
2x²-15x-77=0
5. 2x(x-3)=15
2x²-6x=15
2x²-6x-15=0
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Answers & Comments
Answer:
1. 2x²-3x+7=0
2. 2x²+6x-5=0
3. x²+7x+12=0
4. 2x²-15x-77=0
5. 2x²-6x-15=0
Step-by-step explanation:
1. Just rearrange
2. Just rearrange
3. (x+3)(x+4)=0
x²+3x+4x+12=0
x²+7x+12=0
4. (2x+7)(x-11)=0
2x²-22x+7x-77=0
2x²-15x-77=0
5. 2x(x-3)=15
2x²-6x=15
2x²-6x-15=0