a) \(|\vec{a}|^2+2\vec{a}.\vec{b}-15|\vec{b}|^2\)
b) \(8|\vec{a}|^2+2\vec{a}.\vec{b}-15|\vec{b}|^2\)
c) \(8|\vec{a}|^2-4\vec{a}.\vec{b}-15|\vec{b}|^2\)
d) \(|\vec{a}|^2+\vec{a}.\vec{b}-5|\vec{b}|^2\)
Evaluate the product \((2\vec{a}+5\vec{b}).(4\vec{a}-5\vec{b})\).
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answerhappygod
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Evaluate the product \((2\vec{a}+5\vec{b}).(4\vec{a}-5\vec{b})\).
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