Question

answer please it is very very urgent!! I'll mark you brainliest
in full explaination!!​

Answer 1

Step-by-step explanation:

Hope this is correct answer

Answer 2

Answer:

(a²-7a+10)+(3a²+4a-15)

3a²+a²+4a-7a+10-15

4a²-3a-5

(4a²-3a-5)-(2a²+a-9)

4a²-3a-5-2a²-a+9

2a²-4a+4

so,the answer is 2a²-4a+4

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