Question

Find the value of 2asquared + 5bsquared when a =-6 and b = 2

Answer 1

Answer:

$92$

Step-by-step explanation:

$2 {a}^{2} + 5 {b}^{2} \\ 2 \times {( - 6)}^{2} + 5 \times {2}^{2} \\ 2 \times 36 + 5 \times 4 \\ 72 + 20 \\ = 92$

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