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29 June, 14:05

If the value of b is 7, then what is the value of the expression - 3b2 + 25 = ?

A. 17 B. - 122 C. 122 D. 172. - 3 (7) 2+25-3*49+25-147+25-122

B.-122

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  1. 29 June, 17:44
    0
    B

    substitute b = 7 into the expression and evaluate

    - 3 * (7) ² + 25 = ( - 3 * 49) + 25 = - 147 + 25 = - 122 → B
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