Question

X equals to 5 then find the value of
I) 3x² + 8x - 10
ii)6–7x²
iii) 2x² - 3x+4​

Answer 1

if x= 5

i)3(5)^2+8(5)-10
= 3(25)+40-10
= 75+30
= 105

ii)6-7(5)^2
= 6-7(25)
= 6-175
= -169

iii)2(5)^2-3(5)+4
= 2(25)-15+4
= 50-11
= 39

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