Question

find the error and correct it i) (a+5)(a-2)=a2+5 ii) (m-9)2 = m2-81
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Answer 1

Answer:

1) (a+5) (a-2) = a² + 3a - 10

2) (m-9) 2 = 2m - 18

Step-by-step explanation:

1) open the brackets by multiplying step by step:

a²-2a+5a-10

simplify it:

a²+3a-10

2) multiply 2 with the contents in the bracket:

2m-18