Question

Factorise a square -7a-60​

Answer 1

Answer:

Step-by-step explanation:

a^2-7a-60=0

=>a^2-12a+5a-60=0

=> a(a-12)+5(a-12)=0

=>(a-12)(a+5)=0

=>a-12=0

=>a=12

Or

=>a+5=0

=>a=-5